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$1.95 OCT. 1983 




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OMPUTERS - VIDEO - STEREO - TECHNOLOGY - SERVICE 



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GERNSBACK 

PUBLICATION 



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^ Videogames 

ir Hobby Corner ^ New Idea 

if Equipment Reports 



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Use only genuine soldering 
tips from Weiler. 



Soldering, desoldering, fixed or portable, 

look for Weiler! 

The DS500 power vacuum desoldering 

station works with external air system. 

The DS100 provides identical desoldering 

performance linked with temperature 

controlled soldering capability. 

The new portable DS600 offers you a 

compact self-contained vacuum/air pump 

desoldering unit. 

Which one is for you? 

m 




The Cooper Group PC Box 728 Apex NU27S)2 IfSA'Tel (919) 362-7510 Telex 579497 
BOKER"iCRESCENT'' LUFKIN" NICHOCSON" PLUMB " WELLER WISS"' XCEUTE® 



CooDerTools 



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100 MHz OSCILLOSCOPE 

MODEL StOD 

• 4 Channels/ 8 traces 

• Fast sweep speeds from 2nS/DlV 

• Dual Time Base 

• Higti sensitivity from 2mV/DIV 

• Glass epoxy circuit boards 

• 15,000 MTBF 

• Brilliant intensity, tJomed-mesli CRT 

• Patented AUTO-FIX circuit for easy trigaering 
•Jitter-lree trigger circuit j 

• Two year parts and labor warranty 




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SHOOT IT 



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5397.'"' 



Availatile hand-held or bezel mount 



SCOPE MEMORY/WAVEFORM 




OSCILLOSCOPE CAMERA 

MODEL 70D0 

• Fits all Oscilloscopes and most 
Logic Analyzers 

• Can be hand-tield or mounted 

• Uses standard Polaroid® film 

• Variable aperture control: f3.5 - f32 

• Variable shutter speeds: i second to 
1/125tti&B 

• Built-in "X" contact for event 
triggering 



CAPTURE IT 



MODEL VKfz: 



.converts any oscillascope into a 
storage scope 

.permits acquisition of analog data 
with any computer 



Storage adapter for any 
oscilloscope with e>cternal 
trigger input 

Permits recording of high 
speed measured values 
with strip chart recorders. 

■ Amplitude resolution of 
8 bits = 256 steps 
Maximum clock rate 
2 MHz. permite storage 
of analog signals up 
to 300 kHz 

' Parallel operation possible 



' Pre-trrgger switchable 
in steps for recording the 
•'fiistory"ofa 
trigger event 

■ Built-in linear interpolator 
wtiich can be switched off, 

■ Memory capacity { 
2000 bytes 

' Digital data input 

and output 
' Optional IEEE-4e8 

interface 

■ Strip chart recorder output 




ASK FOR IT 



CORPDRATON 



11684 Pendleton Stieet • Sun Valley, California 91352 

(213) 767-l)D44 • TELEX: 674188 

TOLL FREE 800-423-2344 Outside California 






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Free Timex Computer, Software 
and Free Timex Watch 



Just in time for back to school... 

Timex technology and the buying power of Communications 
Electronics will put you in the challenging, fascinating arena of home 
electronics for much less than you thought possible. As you grow in 
your computer expertise and needs, you can be secure knowing your 
TIMEX SINCLAIR 1000 Computer is expandable with a complete 
line of accessories. You won't outgrow your T/S 1000 Computer— it 
grows with you[ 

In addition to the accessories, Timex offers a full range of software for 
the T/S 1000 Computer. Cassette programs designed especially for your 
computer open the magical microprocessor doors to home management, 
business applications, educational aids and computer games. If your 
computer is used in business, it may be fully tax deductable. 

Of course, as you become more skillful in using the T/S 1000 Computer, 
you'll find that you can create your own programs — tailored, as you wish, 
to your own specific requirements. The extensively detailed instruction 
manual that comes with the T/S 1000 Computer gives complete informa- 
tion on how to do your own programming. 

Behind you and your TIMEX SINCLAIR 1000 Computer is proven 
Timex technology and reliability, It doesn't end with the unique design of 
this sensational computer. Timex wants you to enjoy and grow with it 
When something isn't clear or if you're having trouble operating your 
computer, just dial 800-24- TIMEX — you'll be in touch with the Timex 
Technical Support Group. They're ready to answer all your questions. 

Join the home computer technology 
generation at an amazingly low cost. 

Receive your TIMEX T/S 1000 personal home computer and your 
TIMEX quartz watch absolutely ^ee when you purchase the followingL 
D The Timex T/S 1016 16K Ram Pack 
n The Timex T/S 2040 Printer 
n And your choice of six of the following software cassettes: 

1. College Cost Analyzer 10. Coupon Manager 

2. Home Improvement Planner 11. IRA Planner 



3- Organizer 

4. Money Analyzer 1 

5. Algebra 1 

6. Mixed Game Bag II 

7. Fortress of Zorlac 

8. Gambler 

9. SupermazE 



12. Stock Option Analyzer 

13. Geometry 1 

14. Statistics 

15. Power Pack 1 

16. Grimm's Fairy Traits 

17. Presidents 

18. Cube Game 



When ^ou order, you will receive this complete package: T/S 1000 
Computer, Ram Pack, Printer, choice of six Timex software cassettes, and 
as an extra bonus, a coupon for a free Timex quartz watch. But wait, there's 
more. If you order before October 31, 1983 from CE, Timex will also give 
you a coupon that's good for an additional six free software cassettes from 
a choice of over seventy titles (Froggcr'" excluded). The additional value of 
this bonus software is worth up to $115.70. Therefore, it you act now, you 
can get this complete package worth up to $46 1.20 for only $ 199.00 plus 
$10.00 for U.P.S. shipping and handling in the continental U.S.A. 

Order at no risk. 

All Timex products carry CE's 31 day money back guarantee. If for any 
reason you are not completely satisfied with this special offer, return 
everything within 31 days and we will give you a full refund (less shipping 
and handling charges). All Timex computer products come with a ninety 
day warranty. Should anything go wrong with your Timex products, 
simply mail it to Timex and they will promptly repair or replace it. Dealer 
and educational inquiries welcome. 

Mail ordeis to: Communications Electronics^ Box 1002-Dept. CE-10, 
Ann Arbor, Michigan 48 1 06 U. S. A, If you have a Visa or Master Card, you 
may call and place a credit card order. Order toll-free in the U.S, Dial 
800-521-4414. In Canada, order toll-free by calling 800-265-4828. 
Telex anytime 81 0-2 23- 2422. Ifyouareoutside the U.S.A. or in Michigan 
dial 3 13-9 73-8888. Michigan residents add tax. The demand will be great 
for this fantastic limited time offer, so be sure to order today. 

Order Toll-Frce 800-521-4414 

T/SIOOO 33 a registered traij«morkof Timex Corp Copvrlght* 1 933 Corrmunicalions Electronics'" 



TIMEX 



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Free! 

Timex Sinclair 1000 

Computer 

a $49.95 value 



Free! 

6 Tlmcx Software Cassette* 
up to a $116.70 value 




Free! 

Timex Watch 

Clio OH e your watch 

from 5 styles 

up to a 
$49.95 value 





Timex T/S 2040 Printer 



Choice I 
SoftwATe Cassettes 




COMMUNICATIONS 
ELECTRONICS" 



Computer Products Division 

H18 PhocniK a Bos 1002 G Ann ArBor. Micriigan 4S106 U.S.A- 
Csll TOLL. FREE 800-521.4414 sr Dull I da U.S.A. 31 3-373 8SSS 



FREE!! 



Computer, Watch 
& Software Cassettes 



I ESf Please send my free Timex computer, soft- 
ware and watch with the purchase of a Ram Pack, 
Printer and choice of six cassettes for only $199.00 

(plus $10.00 for shLpplng/ handling In the continental U.S.A. For Canada, 
Puerto Rico, Hawaii, Alaika. or AI>0/FPO delivery, (hipping 1* $25.00). 
Mall To: Communications Electronics^ 

Box 1002-Dept. CE-10 

Ann Arbor, Michigan 48106 U.S.A. 

List selection of cassettes by number: 1 2 3 4 5 6 . 



Credit Card #_ 

Name 

Address 

City 



-Exp. 



_State_ 



_Zip_ 



Telephone 

Note: For additional product information call 800-24-TlMEX. 
Toordercali 800-521-4414 or 313-973-888S CE-10 



CIRCLE B1 ON FREE INFORMATION CARD 




Eleetroiiics 

Electronics publishers since 1908 



THE MAGAZINE FOR NEW 
IDEAS IN ELECTRONICS 



OCTOBER 1983 Vol. 54 No. 10 



SPECIAL FEATURE 



7S YOUH OWN COMPUTER 

A round-up of the computer systems cyrrently available, organized 
in price categories from under $500 to war $4500. Marc Stern 

79 UMDER S5(H) 

95 $500 TO $1000 

111 SIOOOTOSISOO 

118 MAMUFACTUHER LIST 

119 $1500TOS200a 
129 $2000 TO $2500 
135 $2500 TO $3000 
147 S3000 TO S35O0 
155 S35OOTOS40OO 
162 $4000 TO $4500 
167 OVEHS4S00 



BUILD THIS 63 MINI PLAYER-PIANO 

Part 2. Winding up the theory and beginning construction. 
Rot>ert Grossbtatt 



TECHNOLOGY 



CIRCUITS AND 
COMPONENTS 



4 VIDEO ELECTRONICS 

Tomorrow's news and technology in this quickly changing industry. 
David Lachenbruch 

10 SATELLITE/TELETEXT NEWS 

The latest happenings in communications technology. 
Gary H. Arlen 

12 VIDEOGAMES 

Some different ways of distributing games. 
Danny Goodman. 



56 NEW IDEA 

An award-winning project from one of our readers. 

58 HOBBY CORNER 

A new contest. Earl "Doc" Savage, K4SDS 



EQUIPMENT 24 BKDynascan Model 1653 and 1655 Variable Voltage Supply 

REPORTS 

30 Finger Print Control Modute For Epson Printers 

32 Global Specialties Model 6000 Frequency Counter 

40 Tektronix Model 213 DUM Oscilloscope 

DEPARTMENTS e Advertising and Sales Offices 20 Letters 



208 Advertising Index 
B Editorial 

209 Free Information Card 



177 Market Center 

44 New Products 

6 Whafs News 



ON THE COVER 

There's little doubt that personal 
computers have become the fastest 
growing segment of the consumer- 
electronics market. In the past year 
many new companies have been 
founded, and scores of new ma- 
chines have been introduced. In ad- 
dition, most Of the "established" 
manufacturers (in this industry that's 
anyone that's been around longer 
than two years) have either unveiled 
new systems, or beefed-up their ex- 
isting ones, to remain competitive. 
The result has been greatly in- 
creased selection, generally tower 
prices, and just about utter con- 
fusion for the consumer. That's 
where this special section comes 
in — ^it's designed to help you make 
sense out of the jumble of systems 
by summarizing what's available. To 
help make comparisons easier, ev- 
erything is organized by list price. 
The section begins on page 75. 

TO OUR READERS 

Due to our large computer-hardware 
section, several articles that were 
originally scheduled for this issue 
could not appear, due to space lim- 
itations. Those articies will be pub- 
lished in coming months. 



I 



COMING NEXT MONTH 

On Sale October 20 
Test Equipment. A took at whatls 
new and unusual. 
Audio Tape. Audio-cassette 
tapes and how they differ. 
How To Design Analog Cir- 
cuits. All about filters. 
And lots more! 



Radio-Electronics, (ISSN 0033-7862) PubHs^ed monthly 
by Gernsback Publications, Inc., 200 Parti Avenue South. 
Nmi York, NY 10003. Second-Class Postage Paid at New 

Vorl^, H.Y. and additional mailing offices. One-year subscrlp' 
lion rate: U.S.A. and U.S. possessions. SI 4.97. Canada, 
SI 7,97. Other counlfies, S22.47 (cash orders only, payable 
in U.S.A. currency.) Sinole copies S1-50. e 1903 tjy Gerns- 
back Publioalions. Inc. All rights reserved. Printed In U.S.A. 

Subscription Service! Mail all subsoriplion orders, 

changes, correspondence and Postmasler Norices of un- 
delivered copies (Form 3579) to Radio-Elecironics Sub- 
scription Service, Box £520, Boulder, CO 80322. 

A stamped self-addressed envelope must accompany all 
subnrtitled manuscripts and.''or artwork or pholograpbs If Ihetr 
return is desired should they be reiected. We disclaim any 
responsibility for the loss or damage ol manuscripts and.'or 
artwork or ptiotographs while in our possession or otherwise 



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As B service to readers, Radio -Electronics publishes available plans or Inlormatlon relating to newsvuorthy products, techniques ind scientific and technological developments. -^ 
Because of possible variances in the quality end condition of materials and workmanship used by readers, Radio-Electronics disclaims any responslblilty for the safe and proper ^ 
functioning of reader-built projects baaed upon or from pians or Information published in this magazine. ^ 

3 



BRSnViH^ 



VIDEO ELECTRONICS 



DAVID LACHENBRUCH 

CONTRIBUTING EDITOR 




ANTENNA 
SWITCHING 



A noteworthy trend in new sets is the increased use of muitiple antenna connections to help 
solve the problem posed by two or more RF video attachments on a single set. In most cases, 
the antenna terminals may be switched via remote control. Magnavox, NEC, Panasonic, 
Quasar, Sanyo, Sony, and Zenith all have sets that permit the viewer to switch from one 
75-ohm input to another, eliminating the complicated traffic jam at the antenna terminals. 

Sony is fielding a 1 3-inch model, designed especially for use with videogames or other RF 
attachments; it has its second antenna terminal at the front. That terminal is controlled by a 
HIT (Home /nterface Terminal) Button that switches the set to the game or other device. 

Zenith offers a system for switching among four RF inputs by remote control on many of its 
sets. It requires the addition of a special switching splitter (carrying a suggested list price of 
$30) at the back of the set (see photo); the remote-control unit has a sequential four-position 
antenna control. Zenith also introduced the "Redi-Plug," a video-audio in-out eight-pin DIN 
connector built into some of its sets and easily installed on most others made since November 
1981. !t will accommodate a Zenith teletext decoder and (in the future) an adaptor for 
multichannel (stereo and bilingual) sound. GE and Magnavox sets, as well as most of the 
other "true components," also are claimed to be easily adaptable to multichannel sound. 






HI-FI VHS ^''^ ^^^^ ^''^' "^^ launched on the market and provldng excellent audio, Matsushita 
Electric (parent of Panasonic and Quasar) has introduced the VHS answer in Japan, and it 
should arrive on these shores by the end of this year or early next. Like Beta Hi-Fi. the Hi-Fi 
VHS system uses the high head-to-tape speed of the helical track to provide an auxiliary 
high-quality stereo audio track. Beta l-ii-Fi superimposes FM audio on the video track, but 
Hi-Fi VHS uses a somewhat different approach, it adds two audio heads to the video head 
drum and records the audio with a different geometric head angle (azimuth) to avoid in- 
terference with the video information. As in Beta Hi-Fi, the standard longitudinal audio track is 
retained to maintain compatibility of older tapes with Hi-Fi VHS machines. The specs of Hi-Fi 
VHS are similar to those of Beta Hi-Fi — a dynamic range of mors than 80 dB, a frequency 
response of 20-20,000 Hz, distortion 0.3% or less, wow and flutter less than 0.005%, 



RANDOM- 
ACCESS CED 



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They said it couldn't be done — which gives RCA all the more satisfaction with its introduc- 
tion of a random-access CED videodisc palyer. The new model, which was still unpriced at 
presstime, uses a wireless remote control to let the user choose any "page" (single groove) or 
"band" (selection) of the disc, orthe choice may be made by dialing up the minute and second 
desired. These may be programmed to play in any sequence, repeat, etc. An added feature of 
the new machine is on-screen prompting; Alphanumerical reminders and queries appear on 

the screen— such as "please load disc," "audio track A or B?" "Band to Band _," and so 

forth. Special discs with individual frames repeated three times (the CED disc has four frames 
per groove) will be available for programs using stop-motion. The random-access disc player 
may be programmed with its own remote-control unit or with a Digital Command Center, a 
51 -button remote control that comes with many of RCA's new-model TV sets and monitors 
and is designed to operate TV set, VCR and videodisc player. r-e 



THE POMONA PROMISE 

We provide the design engineer with the best 

Grabber * made in this country. 

Or anywhere. 




Saying you can perform at 
that level is one thing. Doing it 
may be something else. 

But doing it is what ITT 
Pomona Electronics is all about. 
And has been ever since we 
opened shop better than thirty 
years ago. 

That's why we promised that 
no matter what it took, we were 
going to produce the best line of 
plunger action test clips going. 

It's clearly a promise we made 
good on. 

And every year we add new 
versions and new applications. 
Now our Grabber line is one of the 



most versatile assortment of test- 
ing tools we offer. 

At ITT Pomona Electronics, 
we know there is no such thing as 
standing pat. We also know that 
your needs change and your ex- 
pectations become greater as the 
demands become more severe. To 
this end we will continue to create 
a better way. A better product. 

That's a promise. 

All of our products are 
described and Ulustrated in our 
General Catalog, and it's free. Just 
call (714) 623-3463 or 623-6751. 
TWX 910-581-3822. Write to us at 
ITT Pomona Electronics, a Divi- 

CIRCLE 97 ON FREE INFORMATION CARD 



sion of International Telephone 
and Telegraph Corporation, 1500 
E. Ninth St., Pomona, CA 91766. 

In Europe: ITT CANNON 
BELGIUM S.A./N.V. Rue Colonel 
Bourg Str. 105 Space A {B.3) 1140 
Brussels, Belgium. Phone: 02-735- 
6094. 

Our products are available 
through your favorite electronics 
parts distributor. 

* GRABBER la the tTfldanurk Tar a Pomone Electronics te$l ctip^ 



ITT 



Pomona Electronics 



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Postage stamps honor 
four U.S. inventors 

The United States Postal Ser- 
vice l^as unveiled the design of a 
block of 20-cent stamps tionorirg 
four American inventors in the ftetd 
of electricity and electronics. The 
stamps were issued September 
21, 1983, at the U.S. Patent and 
Trademark Office in Arlington, VA. 

The four inventors selected as 
most worthy of honor are Charles 
Proteus Steinmetz, Edwin H. Arm- 
strong, Nikola Tesia, and Philo T. 
Farns worth, 

Charles Steinmetz — born in 
Breslau, Germany, in 1865 — came 
to the United States in 1 899. and 
became the leading engineer and 
scientist of General Electric Co. in 
Schenectady, NY. Among the 
more important of his many studies 
and inventions were researches 
on the theories of alternating cur- 
rent and high-voltage power. 

Edwin Armstrong — born in New 
York City in 1 890 — is credited with 
the invention of the superheter- 
odyne radio, the type used aimost 
universally today. His most impor- 
tant achievement was thedevelop- 
mentofwide-band frequency mod- 
ulation, known to tfie average 
listener as FM radio. 

Nikola TesIa was born in 1 857, 
in Smiljan Lika, Croatia, in what is 
now Yugoslavia, The more impor- 
tant of his more than 700 in- 
ventions included pioneering de- 
velopments in radio, high-fre- 
quency electrical currents, glow- 



iamps, and polyphase alternating 
current theory and practice. 

Philo T. Famsworth was born in 
Utah in 1906, His more than 300 
inventions were practically all in 
television and related subjects. He 
is most famous for his first all- 
electronic television transmission, 
made in San Francisco, CA, on 
September 7, 1 927. 

Videogames to become 
computer terminals? 

A new service, Gameline, by 
Control Video Corp of Vienna, VA, 
promises as a start to allow any 
owner of an Atari 2600 video com- 
puter system (and a few other 
brands) to tap into a vast central 
computerized library of popular 
videogames. 

Eventually, says CVC, the 
game-system owner will be able to 
make use of a variety of other fea- 
tures, such as sporls reports, stock 
quotations, news, electronic bank- 
ing, and other services now avail- 
able only to personal-computer 
owners who subscribe to services 
like CompuServe or The Source. 

In addition to giving access to 
an enormous variety of games, 
Gameline gives the player a 
chance to preview new games just 
coming on the market, and to sam- 
ple games before purchase. Con- 
tests, from regional to worldwide, 
with prizes ranging from T-shirts to 
four-year college scholarships, are 
also offered. 




(luifcj Soanmeti 




I Niknti'Kila 




t)dwin AmifliDi^ 




FhiloT Fims^fcijrtti 



FOUR AMERICAN INVENTORS ARE HONORED on US postage stamps. 
Charles Steinmetz, upper left, for pioneering in electrical theories; Edwin 
Armstrong, upper right, for frequency modulation ; Nikola TesIa, lower! eft, 
for alternating current theory and practice, and Ptiilo Famsworth, lower 
right, tor television pioneering and Invention. 




MASTER ATODULE PLUGGED INTO AN ATARI VCS2600mfl connected to 
the telephone brings the avid player a plethora of the latest video games. 



The "brain" that turns an Atari 
2600 into a computer terminal is 
the CVC (Waster Module, which 
plugs into the console where the 
game cartridge would normally go. 
tt consists of a sophisticated mo- 
dem, two memory devices, and an 
automatic teleptione dialer. One 
memory unit stores a videogame 
or up to six pages of typewritten 
text. The other stores the players' 
names, ID'S, the module's serial 
number, contest scores, and tele- 
phone numbers to access the 
system. 

The user simply turns on the TV 
and the game system, and selects 
the desired game from a list that 
flashes on the TV screen. He 
makes his selection with the joy- 
stick and "fire" button, and the 
module dials its memory-stored lo- 
cal number to connect with the 
central computer. The game's soft- 
ware is then fed into the Master 
Module. The whole telephone call 
lasts usually less than one minute. 

Costs of the service are claimed 
to be moderate. The Master Mod- 
ule is being offered at an in- 
troductory rate of $49.50 (plus $5 
for shipping and handling). Game 
sessions (multiple plays of a 
game) cost $1, or about 10 to 15 
cents a play, depending on the 
player's skill. A $15 membership 
fee (waived during the introductory 
period) is charged each member, 
and if the player wants to enter 
contests, a fee of 50 cents for 
registering a high score in the cen- 
tral computer. Games are charged 
against credit cards. (Credit limits 
can be set.) 

The Gameline Master Module is 



compatible with the Atari 2600 
VCS and Sears Video Arcade. It 
can also be used with Col eco Vi- 
sion units equipped with Expan- 
sion Module #f, or with the Col- 
ecoVision Gemini system. 

New color display 
us«s liquid crystals 

A display system that uses a 
monochrome cathode-ray tube 
and a liquid crystal 'color switch" 
to produce a high- resolution, field- 
sequential color display was 
demonstrated recently by Tektron- 
ix at the Philadelphia meeting of 
the Society for Information Dis- 
play. 

The success of the new system 
was due to the development of a 
new, proprietary, fast liquid-crystal 
optical switch. Combined witti the 
monochrome CRT, it produces a 
high-resolution field-sequential 
color display. 

Because there are no shadow 
masks or penetration phosphors, 
the resolution can be as high as 
that of any monochrome CRT. 
Other advantages are inherent 
convergence (there is only one 
electron beam) excellent contrast 
in high ambient light, and rugged- 
ness. (The fragile shadow mask 
and complex color gun are elimi- 
nated.) 

The new technology is expected 
to find applications in instrument 
displays, where its high resolution 
will make it useful. It will also be 
useful in small process-control dis- 
plays, where the color can be used 
for warnings or for highlighting 
special situations. 



TEK 



2213/2215/2235 

DUAL TRACE OSCILLOSCOPES 



THE ANSWER 

BY ANY MEASURE 



Now 60 MHz or 100 MHzTek quality 
is just a free phone call away! 




Tek has expanded its 
best-selling 2200 scope line 
up to 100 MHz. And brought 
it all as close as your 
phone. Tek's revolutionary, 
reduced-component architec- 
ture brings unprecedented 
quality, reliability and afford- 
abiljty to the 60 MHz 2213 
and 2215, and now, the 
100 MHz 2235. 

All three of these lightweight 
(13.5 lb.) scopes feature 2 mV/ 
div vertical sensitivity and 
5 ns/div sweep speeds, plus a 
complete trigger system for 
stable triggering on digital, 
analog or video waveforms. 

Scopes with a compre- 
hensive 3-year warranty* . . . 
probes...and expert advice. 
One free call gets it alt! You 
can order, or obtain literature, 
through the Tek National 





2213 


2215 


2235 


Bandwidth 


60 MHz 


60 MHz 


100 MHz 


No, Of Channels 


2 


2 


2 + Trigger View 


Alternate Sweep 


— 


Yes 


Yes 


y/erVrtig BM Urn it 


— 


— 


Yes— 20 MHz 


Single Sweep 


— 


— 


Yes 


Accuracy: Verl/Horz 


3% 


3% 


2% 


Delay Jitter 


1:5,000 


1:10.000 


1:20.000 


Trigger'g Sensitivity 


0.4 div at 2 MHz 


0.4 div at 2 MHz 


0.3 div at 10 MHz 


Input R-C 


1Mfl-30p( 


1 MQ -30pf 


1Mn-20pl 


Variable Hotdoff 


4:1 


4:1 


10:1 


Price 


$1200t 


S1450t 


S1950t 



Marketing Center. Technical 
personnel, expert in scope 
applications, will answer your 
questions and expedite deliv- 
ery Direct orders include 
operating and service man- 
uals, two 10X probes, 15-day 
return policy and worldwide 
service back-up. 



Call toll-free: 
1-800-426-2200, 
Extension 76. 

In Oregon, call collect: 
(503) 627-9000, Ext. 76. 

tfticeFO.B. Beaverton.OR. 

'3ryear warranty includes CRT gnd appli&S to 2000 
(amiiy oscilloscopes purchased after 1/1/83, 
Scopes afe UL Listed, CSA and VDE approved. 



CIRCLE 74 ON FREE INFORMATION CARD 



Ibktronix^ 

COMHmH) TO EJCEUfMCE 



EDITORIAL 



Yes! Another Buyers Guide For Computers 



Our research tells us that most of our readers either own a compu- 
ter or are considering purchasing a computer. Even among those of 
you who do own a computer, many are considering either upgrading 
their systems or outrightly purchasing a new system. In today's 
marketplace, that's not an envious position to be in. It seems as if 
everyone, and I mean everyone, is jumping into the computer mar- 
ketplace with a new computer. And to make matters even more con- 
fusing, there's a flood of workalikes and lookalikes. These are com- 
puters that are designed to look like or be "compatible" with other 
computers such as the IBM PC, TRS-80, Apple, or others. 

With prices, features, and capability varying widely from computer 
to computer, your decison won't come easy — and it shouldn't. With 
such a wide array of computers available, you must weigh your deci- 
sion carefully. Even with the drastic price reductions of late, comput- 
ers aren't cheap. Even after you've made a decision, reconsider it 
before you make your final decision. Get your hands on the compu- 
ter and play with it. Make sure it runs the software that you ultimately 
intend to use and that it will interface with the peripherals you wish to 
connect to it. Try your darndest to ensure that the computer won't 
become obsolete within a few months. 



This month's Your Own Computer special section is intended to be 
a guide to help you narrow down your choices. It is not meant to be 
used to make a final decision. And above all, unless you pay carefull 
attention to compatibitity, or buy peripherals from the same manufac- 
turer, don't expect to take your computer home, plug it in and have it 
work. For example, all RS-232 I/O ports are created equal. Right? 
Wrong! The RS-232 standard is sometimes adhered to and some- 
times it isn't. So, if you buy a printer with an RS-232 port and con- 
nect it to a computer with an RS-232 port, it may work. Then again, it 
may not. Remember — Caveat Emptor! 




ART KLEIMAN 

Editor 



Eleolronios 



Hugo Gernsback (1884-1967) (ounder | 

M. Harvey Gernsback, editor- in -chief 

Larry Sleekier, GET, publisher 

Arthur Kleiman, editor !■ ! 

Carl Laron, WB2SLR, associate editor 

Brian C, Fenton, assistant editor 

Jack Darr, GET, service editor '^ 

Robert F. Scott, semiconductor editor 

Herb Friedman, communications editor 

Gary H. Arien, contributing editor 

David Lachenbruch, contributing editor 

Earl "Doc" Savage, K4SDS, hobby editor 

Danny Goodman, contributing editor 

Dan Rosen bloom, production manager 

Robert A. W. Lowndes, production 
associate 

Joan Roman, circulation director 

Arline R. Fishman, 

advertising coordinator 

Covef photo by Robert Lewis 

Radio-Electronics is indexed in Applied Sci- 
ence & Technology Index and Readers 
Guide to Periodical Literature. 



Gemsback Publications, Inc. 
200 Park Ave. South 
New York, NY 10003 
President: M. Hanrey Gemsback 
Vk» President; Larry StecWer 

ADVEHTISING SALES 212-777-6400 

Larry Sleekier 
Publisher 

EAST/SOUTHEAST 

Stanley Levitan 
Radio-Electronics 
200 Park Ave. South 
New Yori!, NY 10003 
212-777-6400 

MIDWEST/Texas/Arkanses/Okla. 

Ralpti Bergen 

Radio- Eleclfonics 

540 Frontage Road— Suite 325 

Northfleld. Illinois 60093 

312-446-1444 

PACIFIC COAST 
Mountain States 
Manrin Green 
Radio-Electronics 
413 80. LaBreaAve. 
Los Angeles, Ca 90036 
213-938-0166 




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SATELLITE/TELETEXT NE^ 



I 



GARY ARLEN 

CONTRIBUTING EDITOR 



THREE-BIRD 
SYSTEM 



Geostar Satellite System has proposed an all-digital nationwide service which would offer 
paging, emergency monitoring, and other special services via three new satellites. The newly 
fornied company, based in Princeton, NJ, envisions three operational geostationary satellites 
(at 70°, 1 00° and 1 30° west longitude) plus an earth station with massive computer power. The 
system would operate in the 2.48, 1.6 and 5.1 GHz spectrums and, if Geostar gets FCC 
approval, the service could be up and running by 1987. 

Geostar customers would be equipped with a $200 transceiver to transmit their coordinates 
to any other transceiver. The units would have a 36-character message readout (probabiy 
liquid crystal) or possibly a hard-copy printer. Geostar will automatically track the location of 
all transceivers; one of the birds will transmit an interrogation signal 1 00 times per second to 
each transceiver; the transceiver automatically will relay a signal with an identifying code 
through all three satellites. Using eight 32-bit sequences, GSS will be able to address 268 
million individual users. The system will include suppression circuits in the transceivers to limit 
the number of times they would respond to the interrogation if the user does not need instant 
access. 

GSS foresees airplanes and autos equipped with the devices to help signal an emergency 
call for help. Travelers could also send or receive brief messages or reports via the GSS 
system. 



NBC ESCALATES 
TRANSMISSION 



NBC-TV is now feeding its entire New York-originated schedule via satellite, with most of the 
programming traveling via Comstar D-3, transponder IV (at 87° west longitude); some 
afternoon programming goes out via Satcom IV, transponder 24 (at 83°). Almost all of the 
networi('s programs— with the exception of sports broadcasts— are sent to affiliates via 
satellite, including speciai closed-circuit news reports transmitted daily at 4:30 p.m. (eastern 
time). 



RCA LAUNCHES 

ADVANCED 

SATCOM 



RCA Satcom 1R — ^the replacement satettlte for RCA's original communications satellite 
which has been in service for nearly eight years — is now in place at 1 39° west longitude. 
IWeanwhile the original Satcom 1 is still in service at 136°, The new bird is the first completely 
solid-state domestic communications satellite, with 24 transponders of 8,5 watts each. The 
new antennas provide stronger signal coverage to all 50 states. 



AROUND THE 

SATELLITE 

CIRCUIT 



Oak Industries has dropped its plans to build and operate a direct-broadcasting satellite 
system. The company had intended to launch its own DBS bird by 1 986 for direct-to-home 
pay-TV programming, but now Oalc has retrenched on its plans, although it still intends to 
make equipment and programming for DBS and other pay TV sen/ices. 

The FCC is eyeing a plan to restructure spectrum allocations to put DBS service in the 
12-GHZ band, shared with other microwave services. 

United Satellite Communications, which plans to begin DBS service this fall, Is negotiat- 
ing with local telephone companies to install and service receiver facilities. USC will have five 
channels of programming, and the company is also talking to existing cable-programming 
services such as ESPN and Cable News Network about carrying their feeds as pari of the 
DBS service. USC plans to offer its package of programming for about $17.50 per month in 
addition to the cost of buying reception facilities, now estimated at about $500. 



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TELETEXT BRIEF 

BITS 



Public Broadcasting Service has launched a demonstration teletext service, using vertical- 
blanking-interval lines 17 and 18 for business data provided by Merrill Lynch and Co. The 
service will be tested via public TV stations in New York, Chicago, and Miami. 

American Bell Inc. will sell its videotex home terminal in south Florida this year for $595; 
for now, the unit is intended to be used by customers of Viewtron, the electronic publication 
and home banking/shopping service developed by Knight-Ridder Newspapers. 

Control Data Corp. is becoming a major partner in Source Telecomputing Corp., raising 
the possibility that some Control Data subsidiaries (notably Ticketron and various financial 
service companies) may soon offer online interactive services via The Source. R-E 




250 e.5 



MEW 
TechVOM 

WV-547C 

Drop-proof. Fuse protected. 

High impact ABS plastic case. 

• 

Rugged, 

accurate taut-band meter. 

• 

Sensitivity 

20,000 ohms-per volt OC 

9,000 ohms-per volt AC 

• 

21 color coded ranges. 

• 

Snap action, 

dual detent range switch. 

• 

Temperature scale* 

(optional accessory) 

• 

User oriented 

"right angle" test leads. 



For $05.50 

Here's your best VOM value. 



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It's compact, drop-proof (3 feet) and provides 21 
color-coded ranges— volts, milliamps, ohms, 
temperature scale and decibels. True quality instru- 
ment foryour portable applications. Tough, accur- 
ate, taut-band meter, fuse-protected. Sensitivity 
20,000 ohms/volt DC. High-impact case, colored 
bright orange. Snap action, dual-detent range 
switch. Range limits: 1000V DC and AC, 250 mA 
DC, one megohm, +200°C. Battery Test provision. 
Meter OFF position. Temperature scale (special 
probe optional). 

WV-547D. Same instrument in impact-resistant 
carrying case. Handle converts to tilt stand, 

(09.95 

Want full technical details and a demonstration? Call toll-free, 1-800-523-3696, for the VIZ distributor near you. 




^D 




Look to VIZ for tndue, quality, availabiiity. 
Over 70 instruments in the line— PLUS fuil accessories. 

VIZ Mfg. Co., 335 E. Price St., Philadelphia. PA 19144 



CIRCLE 91 ON FREE INFORMATION CARD 



VIDEOGAMES 



Alternate means of distribution 

DANNY GOODMAN, CONTRIBUTING EDITOR 



THE TIME MAY COME WHEN , HAVING CON- 

quered or become bored with a cartridge, 
we no longer put it on the shelf and go out 
to buy another. Recently, a couple of 
ideas have surfaced to offer different 
ways of providing us with games to play 
widiout investing in $20 to $40 cartridges 
or waiting for a cable-TV company to 
offer a game service. 

One system getting underway now is 
called GameLine by Control Video 
Corporation (8620 Westwood Center 
Drive, Vienna, VA 22180). GameLine 's 
idea is to have games downloaded to your 
2600 via the telephone. Here's how it 
works. 

First, you need to buy CVC's Game- 
Line Master Module for $50-60 at a locaJ 
videogame store. That gizmo, shown in 
Fig. 1, looks like an oversized cartridge 
and plugs into the cartridge slot of the 
2600 (or a 2600-compatible machine) It 
also comes with a cord that has modular 
telephone plugs on either end and a " Y" 
adapter. All you have to do is plug the 
adapter into the back of your telephone, 
and the cord from the adapter to the Mas- 
ter Module. 




RG.1 



A $15 registration fee sets up your 
account with CYC. All charges are billed 
to a credit card, and parents have the 
option of limiting the dollar amount play- 
able per week. Each time you download a 
game, you are charged $1 .00. For that 
dollar, you get about 10 complete 
games — then the game disappears from 
the console's memory. 

To download a game, you must first 
look at the listings of games offered by 
GameLine in their monthly newsletter 
(free for the first year). Responding to 



12 



prompts on the screen with your joystick, 
you select the number of the game you 
want. Then the Master Module auto- 
matically calls GameLine (either a toll- 
free or local call), tells the main computer 
who is calling, and asks for the game you 
want to play. The entire transfer process 
takes about a minute. 

As of this writing, however, CVC has 
not lined up too many suppliers of games. 
Imagic is about the biggest of them all. 
The balance of the listings are of 
smaller— and a few defunct — producers, 
including Telesys, U.S. Games, Data 
Age, and so on. If CVC can attract the big 
guns — Atari, Activision, Parker, 
Coleco — only then will GameLine be 
something to consider. And even then, 
only if the companies release titles to 
GameLine at the same time they're re- 
leased to the stores. Then it'll really be a 
great way to try out a potential blockbus- 
ter cartridge. Unfortunately, I don't be- 
lieve CVC will get too big a following of 
the big-name game producers — they 
would rather sell cartridges outright. 

The system does, however, hold prom- 
ise as a telecommunications network for 
the 2600 as people graduate to the compu- 
ter keyboard. The GameLine Master 
Module (technologically a fine product at 
an attractive price) and main computer 
could become a low-cost electronic mail 
system for the masses. 

Another approach 

Taking a different approach to game 
distribution is a company called Romox 
(501 Vandell Way, Campbell, CA 
95008). Although the fuin is focusing its 
attention on computer cartridge-type soft- 
ware now, there is nothing that would 
prevent its concept from being carried 
over to videogames. 

Romox produces cartridges that can be 
reprogrammed by a dealer equipped with 
a special computer-like terminal. The 
system is bas«d on periodic telephone 
transfers of software from a central com- 
puter to the in-store terminal where it is 
stored on a hard disk. The first cartridge 
you buy costs about the same as a regular 
game cartridge: $25-35. Later, if you find 
you don't use that program anymore, you 
can take it back to the dealer, look at the 
list of hundreds of programs on hand and 
have the cartridge reprogrammed with a 
new game for about $10. The process 
takes only a minute or two, and you leave 



the store with a new program at one-third 
the regular cost. 

Romox has signed up several major 
computer-software houses, including 
Sierra On-Line, to participate in this new 
distribution method. What I like about 
this system over GameLine is that you get 
a cartridge that you can play as many 
times as you want. With GameLine, the 
meter is running every time you lose a 
life. That's too much like the quarter- 
eating arcades. I thought the home 
videogame was supposed to let us get 
away from constantly reaching into our 
pockets for one more chance. 

CommaVid's Cake Walk 
for Atari 2600 




CIRCLE 101 ON FREE INFOF^MATION CARD 



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THERE IS NO LACK OF "cUTESY 

videogame cartridges available for the 
26QO, yet more keep coming. CommaVid 
Inc, (1470N,Famsworth, Suite 203, Au- 
rora, IL 60505) has published another one 
of those games that seems aimed at the 
younger or more sensitive games player. 
This one is called Cakewalk, a simplistic 
hand-eye coordination activity, 

continued on page 14 



NEW! 




\ 



Scanners 

Communications Electrotiics7 

the world's largest distributor of radio 
scanners, introduces new models 
with special savings on all radio 
scanners. Chances are the police, 
fire and weather emergencies you'll 
read about in tomorrow's paper are 
coming through on a scanner today. 
We give you excellent service be- 
cause CE distributes more scanners 
worldwide than anyone else. Our ware- 
house facilities are equipped to pro- 
cess thousands of scanner orders 
every week. We also export scanners 
to over 300 countries and military 
installations. Almost all items are in 
stocit for quicit shipment, so if you' re 
a person who prefers fact to fantasy 
and who needs to know what's really 
happening around you, order your 
radio today from CE. 

Regencyf Ml 00 

List price S31 9.95/CE price $1 99,00 
0-Bmnd, 10 Chmnn»l • No-Cfyala/ scanner 
Smmreh • Loekouf • AC/DC 

Bands: 30-50. 144-174, 440-512 MHz 
The Regency Touch Ml 00 provides the ease of 
computercontrolled, touch-entry programming 
In a compact-sized scanner for use at home or 
on the road. Enter your favorite public service 
frequencies by simply touching the numhereb 
pressure pads. You'll even hear a "beep" tone 
that lets you know you've made contact. 

In addition to scanning the programmed 
channels, the IvIlOO has the ability to search 
through as much as an entire band for an active 
frequency. When a call is received, the frequency 
will appear in the digital display. You can either 
continue searching or store the newfrequency in 
one of the 10 scan channels. 

WOW Regency® HX650 

List price S1 19.95/CE price $84.00 
S-Band,0 Channel • Handhald crystal scannm 

eands; 30-50, 146-174, 450-512 MHz. 
Now you can tune in any emergency around 
town, from wherever you are, the second it 
happens. Advanced circuitry gives you the 
world's smallest scanner. Our low CE price in- 
cludes battery charger/ A, G. adapter. 

NEW! Regency® MX7000 

Allow ) 20-240 days lor <:ieiivery alter receipt of 
order due to high demand lor this product. 
List price $599,95/CE price $449,00 
iO-Bvnd, 20 Channel • CiyataHass • AC/DC 

Frequency range; 2S-2 7, 30-108, 70B-136AM. 
744-1 74, 440-512, S06-38 1 MHz. 1.0 GHz. 1. 1 GHz 
In addition to normal scanner listening, the 
MX7000 offers CB,VHF, and UHFTVaudio,Fr^ 
Broadcast, all aircraft bands (civil and miiitary), 
800 t^Hz communications, cellular telephone, 
and when connected to a printer orCRT, satellite 
weather pictures. 

The Regency Touch MX7000 provides the 
ease of computer controlled, touch-entry pro- 
gramming in a compact-sized scanner for use 
at home or on the road. Enter your favorite fre- 
quencies by simply touching the numbered 
pressure pads. You'll even hear a "beep" tone 
that lets you know you've made contact. 

In addition to scanning the programmed chan- 
nels, the tVIX7000 hasthe abilitytosearch through 
as much as an entire tiand for an active frequency. 
When a call is received, the frequency will 
appear on the digital display. 



/tf£l¥/ JILSX-200 

CE price $279.00/NEW LOW PRICE 
8-Bandf iO Channel * No^crystal acannar 
Quartz Clock • AU/FM • AC/DC 

Bands: 26-83. 108-1 SO, 380-514 MHz. 
Tune IVIilitary, F.B.I., Space Satellites, Polices 
Fire, D.E.A., Defense Department, Aeronautical 
AM band. Aero Navigation Band, Fish & Game, 
Immigration, Paramedics, Amateur Radio, Jus- 
tice Department, State Department, plus thou- 
sands of other restricted radio frequencies no 
other scanner is programmed to pick up. 

The JILSX-200 features unrest rictedfederal 
frequency coverage - all 8 bands, selectable 
A(sfl/Fty1 receiver circuits -60db pi us selectivity, 
tri-switch squelch settings- signal, audio and 
signals audio, outboard AC power supply- DC 
at 1 2 volts built-in, quartz clock- bright vacuum 
fluorescent blue readouts & dimmer, dual level 
search speeds - tri-level scan delay switches, 
16 memory channels in two channel banks, 
receive fine tune (RIT) ± 2 KHz, speaker, 
recorder, and recorder control jacks, dual level 
RFgainsettings-20 db pad, AGO test points for 
optional signal strength metersand many more 
features. Order your JILSX-200 scanner today, 

NEW/ JILSX-100 

CE price $1 49.00/NEW LOW PRICE 
B'Band, iO Chmnnal • Cryttallamm • AC/DC 

Frequency range: 30-54, j 40-174, 410-514 MHz. 
The JIL SX-100 scanner is a mobile keyboard 
programmable scanner that puts you in the seat 
of the action at home or in your car. Compact 
and good looking, the SX-100 even gives you 
the time and date. It's small size will easily fit in 
most domestic or foreign cars and it's AC/DC 
adaptable for home use. 

Regency® R106 

List price SI 49.95/CE price S99.00 
5-Band, lOChannal • Cryatal acannar » AC/DC 

Frequency range: 30-50, 146-174, 450-512 MHz. 
A versatile scanner, Thefiegency R-106 is built 
to provide maximum reception at home or on 
the road. Rugged cabinet protects the advanced 
design circuitry allowing you years of depend- 
able listening. 

You'll hear calls on all the public service 
bands, also extended UHF and amateur. What 
you will really appreciate, though, is that the 
R-106 will provide the kind of first rate perform- 
ance you have come to expect from Regency. 
Order crystal certificates for each channel. 

#fE1¥/ Regency® D810 

List price S399.95yCE price S259,00 
8-Band, 50 Channal * Cryatallaaa • AC only 

Bands 30-50, 88- T 08, 118-136. 144-1 74.440-512 MHz 
This scanner offers Public service bands, plus 
Aircraft and Fl^ broadcast stations. You can 
listen to Bach or a Boeing 747, the Rolling 
Stones or the riot squad, or any of 50 channels. 
Plus special direct access keys let you listen to 
police, fire, emergency, or any of your favorite 
channels just by pushing a button. 

Regency® R1040 

List price SI 99.95/CE price S1 29.00 
0-Band, tO Channal • Cryatallaaa • AC only 

Frequency range: 30-50. 144-174. 440-512 MHz. 
Now you can enjoy computerized scanner ver- 
satility at a price that's less than some crystal 
units. The f?egencyR1 040 lets you in on ail the 
action of police, fire, weather, and emergency 
calls. You'll even hear mobile telephones. 

Programming the R1 040 is easy Ivlerely touch 
the keyboard and enter any of over 15,000 
frequencies on your choice of 1 channels. 

Fanon Slimline 6-HLU 

List price 31 69.9S/CE price $99.00 
Low cost S-cfiannef, 4-band scannarl 

The Far^on Slimline 6-HLU gives you six chan- 
nels of crystal controlled excitement. Unique 
Automatic Peak Tuning Circuit adjusts the re- 
ceiver front end for maximu m sensitivity across 
the entire UHF band. Individual channel lockout 
switches. Frequency range 30-50, 146-175 
and 450-51 2 MHz, Size 2¥i x6y4 x 1." Includes 
rubber ducky antenna. Ivlade in Japan. Order 
crystal certificates for each channel. 

TEST ANY SCAHNER 

Teat any scanner purchased from Communications 
Elvctronica^ for 31 day^ before you deci^de to keep it. If for 
any feason you are not completely satisfied, return it in 
original condition with all parts in 31 days, for a prompt 

refund (Eess ship ping/ handling charges and rebate credits). 

CIRCLE 22 ON FREE INFORMATION CARD 



OTHER RADIOS A ACCESSORIES 

Rftflincy* C403 Scanner S59.00 

pHnasonic RF-9 Shortwave receiver 584.00 

Ppnasonic HF 799 Shortwave receiver £219.00 

Panasonic RF'2©00 Shortwave receiver $1 9900 

Panatonic BF-290O Shortwave receiver $249.00 

Panftftonlc RF-31 00 Shortwave receiver. $269.00 

Pan Bson I c R F-6300 Shortv^ave receiver. $539.00 

WfW/ Bearcat* t 1S1 Scanner ...4169.00 

WfWf Bearcat" Five- Six Scanner $129,00 

SAarCHt* 300 Scanner S349.00 

Bearcat* 250 Scanner $279,00 

Bearcat* 200 Scanner ,.. ....5139.00 

Bearcat^ 21 OXL Scanner $22900 

Bearcat* 20/20 Scanner $289,00 

Bearcat* 1 00 Scanner - S2S9.00 

Bearcat* Wealher Alert S49.00 

C H B-6 Fanon AC Ada ptar/ Batte ry Charg er $ 1 5.00 

CAT'S Fanon carrying case vifirh belt clip $15.00 

SPSSCarrycng case for Searcaf Five-Six — , £15,00 

MA'SOfi Carring case for Regency HX6S0 , . $1 5.00 

SCMA'O Fanon MobleChgrger/Audip Amplifier ...$49,00 
AUC-3 Fanon au lo I ighter adapte r/ Batte ry C hafQer. . . $ 1 5,00 

FB'E Frequency Directory lor Eastern U.S. A. $1 2.00 

FB-W Frequency Directory for Western U.S.A. $12.00 

TSO "Top Secref Reg is! ry of U.S. Government Freq. ... $ 1 5.00 

RRF Railroad Frequency Directorv SI 0.00 

ESO Energy Services Directory. $1 0.00 

ASD Frequency Direclory for Alrcrafl Band SI 0.00 

SRF Survival Radio Frequency Directory $10.00 

TIC Techniques for Inlercepting Comm. Manuat...S12.00 
CIE Covert Intelligence, Elect. Eavesdropping Man. , . , $12.00 

8-4 1.2 VAAA Ni-Cad batteries {set of four) $9.00 

B-6 1 .2 V AA Ni Cad batlerles {set o\ fouO £1 2-00 

A-1 35c Crystal certificate S3,00 

Add $3.00 shipping for all accessones ordered at the same lime. 
Add Si 2.00 per shortwave receiver for U.P.S. shipping. 

INCREASED PERFORMAHCB AMTEHNAS 
\i you want the utmost in performance from your 
scanner, it is essential that you use an external 
antenna. We have' a base and a mobile antenna 
specifically designed for receiving all bands. Order 
#A60 is a magnet mount mobile antenna and order 
#A70 is an all band base station antenna. Price Is 
$35.00 each pJus S3.00 for UPS shipping in the 
continental United States. 

BUY WITH CONFIDENCE 

To gat tho fastest delivary from CE of any 

scanner, send or phone your order directly to our 
Scanner Distribution Center^ Be sure to calculate 
your price using the CE prices in this ad. Michigan 
residents please add 4% sales tax or supply your 
tax I. D. number. Written purchase orders are accep- 
ted from approved government agencies and most 
well rated firms at a 30% surcfiarge for net 30 
billing. All sales are subject to availability, accept- 
ance and verification. All sales on accessories are 
final. Prices, terms and specifications are subject 
to change without notice. All prices are in U.S. 
dollars. Out of stock items will be placed on back- 
order automatically unless CE is instructed dif- 
ferently. Minimum prepa/t; order S35.00. Minimum 
purchase order S200.00. Most products that we 
sellhaveamanufacturer^swanranty.Freecopiesof 
warranties on these products are aval lable prior to 
purchase by writing to CE. International orders are 
Invited with a S20.00surchargeforspecialfiand ling 
in addition to shipping charges. All shipments are 
F.O.B. Ann Arbor, Michigan. No COD'S please. N on- 
ce rtKled and foreign checks require bankolea ranee. 
Mati orders to: Communications Electron- 
Icsr Box 1002, Ann Arbor, Michigan 48106 
U.S.A. Add S7.00 per scanner (or U.P.S. ground 
shipping and handling In the continental U.S.A. 
If you have a Visa or Master Card, you may call 
and place a credit card order. Order toll-free In 
the U.S. Dial 800-521-4414. In Canada, order 
toll-free by calling 800-265-4828. Telex anytime 
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13 



VIDEOGAMES 



continued from page 12 



An introductory screen depicts a large 
face of a mustached baker, complete with 
chefs hat, and pairs of cakes streaking 
along the bottom of the screen. When you 
turn on the game, the name of the car- 
tridge and the CommaVid company logo 
appears at the upper left comer of the 
screen. That introductory screen comes 
back at the end of each game, displaying 
the final score. 

The actual game begins with a press of 
the RESET button. Six rows of conveyor 
belts dominate the screen action. At the 
end of each conveyor is a small gap; on 
the other side of the gap is a shelf. The 
object of the game is to move the baker up 
and down the screen to each belt, where 
he transfers the cake or other pastry com- 
ing off the conveyor over to the shelf. If 
he fails U get to a pastry in time, h falls to 
the floor, and a cleanup man comes out 
and sweeps the mess away. To keep things 
interesting, pastries come at random, 
either singly or in groups of two and 
three, and at different speeds on each belt. 

In defense of the oncoming cakes, you 
can stop one conveyor by positioning the 
baker at the end of that belt and pressing 
the action button on the controller. The 
belt turns red and stops for a few seconds, 
allowing you some time to catch up with 
the other cakes. 

The cartridge contains 16 variations of 
this one-player game. Differences be- 
tween versions lie for the most part in the 
speed of the cakes and the response speed 
of the baker to your joystick action. A few 
variations at the top-end feature tricky 
gingerbread men who move along the be- 
hs erratically. 

What disappointed me most about 
about this game is what I call the two- 
dimensionality of the game play, Fm not 
talking about graphics — which, I'm sorry 
to say, are nothing special either — but 
about how the game plays. All the action 
is on the screen at once, and the action or 
thought demanded of the player is minim- 
al. In other words, there is essentially no 
depth to the game. 

Perhaps this level of game is what the 
very young and/or inexperienced go for. 
But there are so many other similar- 
playing games in the store racks with 
much better graphics and sound (sound 
that does more than chime a dull tone at 
the acquisition of each point) that you 
probably already own enough games of 



this type to take care of the occasional 
players in your household. And I am con- 
cerned that between each game, when the 
title screen reappears, the cartridge does 
not cycle through the colors to avoid 
bum-in on a color TV. There is also an- 
other potential problem: the cartridge 
may not work on the Colecovision 2600- 
cartridge adapter— the sample we had did 
not. 



Atari's Space Dungeon for 
Atari 5200 




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cartridges have been outstanding addi- 
dons to the fledgling library. And 1 don't 
think I've come across a more challeng- 
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videogame cartridge on any system to 
date than Space Dungeon, 

One of the most unusual features of this 
game is dnat the player must use both 
joysticks to control the action. The car- 
tridge is packaged with a special plastic 



brace that tries to hold both controllers 
steady while you concentrate your 
physical action on the joystick. Without 
going into the somewhat inane instruction 
manual explanation of what your screen 
character is doing, suffice it to say that 
you must move your character into as 
many of the 36 chambers on each level as 
possible. 

Treasures are picked up by running 
over them. But you have to avoid or de- 
stroy all the enemies who can do you in on 
a second's notice. There are many kinds 
to watch out for. 

The only time you gain the bonus point 
for picked-up treasure is when you fight 
your way into the chamber with the bonus 
square. Then, not only do you collect 
bonus, but you proceed to the next, more 
intensive level of 36 chambers. And so 
on — for more levels than I could reach. 
At levels two and up, a Thief is also in the 
game. The Thief's objective is to try to 
take away treasures while you try to col- 
lect them. 

Controller action takes quite a while to 
get used to. One joystick controls the 
movement of your character within the 
chamber and through openings to adja- 
cent chambers. The other joystick con- 
trols the firing direction of a powerful 
laser-type cannon. Unfortunately, you 
have only eight firing directions, so to 
aim at a rapidly oncoming enemy, you 
need to juggle the firing direction and 
movement of your character. That's not 
an easy task by any means because each 
joystick needs to go in opposite direc- 
tions: moving away from the enemy, 
while firing toward the enemy. 

Your progress through a level is moni- 
tored in a map of the level that depicts 
which chambers you've been in. That 
map also shows which chambers still 
have enemies lurking within; which one 
has the bonus portal to the next level, and 
where you dropped the treasure the last 
time an enemy hit you. 

The physical challenge of maneuver- 
ing two joysticks is trouble enough. 
When you add the very fast action on 
screen, you have one harried time keep- 
ing on top of the situation. Space 
Dungeon is an excellent example of the 
computer-quality games that the Atari 
5200 is capable of. Let's hope Atari main- 
tains the same level of quality in future 
5200 offerings. R-E 



14 



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19 



LETTERS 



Address your comments to: Letters, Radio-Electronics, 
200 Park Avenue South, New York, NY 10003 



RECEIVE-BOARD PROBLEM 
Heathkit has found a problem with H ERO's 
sonar receive board. It acts erratically within a 
few hours of operation. That is caused by 
noise- pickup from the logic suppiy. 

Although they wili upgrade HERO'S under 
warranty, you can aiso do it yourself. Just 
replace the receive transducer wiring with a 
shielded cable. Be sure, however, to connect 
the shieid to the uninsulated pin on the trans- 
ducer. Finally, lift the P1 101 plug above the 
circuit board. 
MICHAEL A. TYBORSKI 
Application Engineer 
Greendate, Wt 

SPEAKER PROBLEMS 

Having restored many old radios myself, I 
thoroughly enjoyed the article "How To Re- 
pair Antique Radios" in the March 1983 issue 
of Rsdio-Electronics. 



We are a major reconing center with over 
30 years' experience behind us. We would 
gladly help any of your readers with any 
speaker problems that they might have. 
FRANK PETRONELLA 
Phoenix Electronics 
1100 FM 1960 W. 
Houston, TX 77090 



ON CHOOSING A PRINTER 

I really must take exception to a number of 
items in Les Spindle's comments on choos- 
ing a printer ("Computer Corner," Radio- 
Electronics, Ivlarch 1983). First of all, divid- 
ing printers into dot-matrix and impact is like 
dividing IC's into nand gates and CMOS— not 
only do the categories overlap, they don't 
cover the entire topic. 

"Impact" refers to the method of producing 
the image on the paper, In impact printing, an 
inked surface {normally a ribbon) and the 



paper are forced together at high speed, 
transferhng the ink to the paper. All of the 
printers that Mr. Spindle talks about are im- 
pact printers. 

There are also a number of non-impact 
printing technologies, the most common of 
which are thermal (using a specially treated 
paper that changes color when heated), 
Xerographic (the laser printers, which are 
very popular on large mainframe computers), 
and electrostatic (similar to Xerographic, but 
using specially treated paper and much sim- 
pler mechanism). 

The main advantages of Impact technol- 
ogies are low cost and the ability to produce 
carbon copies. The disadvantages are lots of 
noise, lots of moving parts to wear out, and 
fairly low speed. The main advantages of 
non-impact technologies are high speed and 
low noise levels; the disadvantages are high 
cost and inability to make carbons. 

Dot-matrix refers to the method of forming 






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characters. Dot-matrix printers form charact- 
ers from an array of dots (usually 5 dots wide 
by 7 dots high , or 9 dots wide by 1 1 dots high) , 
Formed- character printers (what Mr. Spindle 
calls "impact printers") have the complete set 
of characters fully formed (as you find on a 
typewriter). There are a few other methods of 
forming characters, but they are very rare. 
The main trade-offs between dot-matrix and 
formed-character printers are speed, print 
quality, and functionality. (Contrary to Mr, 
Spindle's assertion, noise level is a function 
of image technology, rather than of character 
technology.) 

Dot-matrix printers are generally faster 
than formed-character printers. The print 
quality of formed-character printers is usually 
much higher, but some of the newer dot- 
matrix printers use overlapping dots, which 
results in a print quality that is nearly as good 
as that of formed-character printers. 

An area that Mr. Spindle completely 
ignores is that of functionality. A formed- 
character printer can produce only charact- 
ers which are in its formed set; a dot-matrix 
printer, however, has the capacity to produce 
any character which can be formed from its 
matrix—including complete pictures. (Those 
capabilities, programmable character sets 
and graphics capabilities, are usually offered 
as options.) 

LAWRENCE J. JONES 
Cincinnati, OH 

RADAR DETECTORS 

Richard Kolasinski presented quite a few 
important pieces of information in his letter on 
radar detectors in the March 1983 Radio- 
Electronics, but it seems that he forgot to 
take ail of his information to its logical conclu- 
sion. 

If the "vast majority of drivers" are exceed- 
ing the speed limit "when they think they can 
get away with it," then obviously, the speed 
limit is too low. What isn't quite so obvious is 
that police officers, who are required to en- 
force artificially low speed limits, have their 
hands full, and end up ignoring the bad driv- 
ers — in effect, condoning their bad driving. 

Want to put the radar-detector industry out 
of business, Mr. Kolasinski? Then help us get 
the speed limits back to reasonable levels. 
Maybe then we can all stop watching our 
speedometers and watch the road instead. 
DAVID BARNES 
Cincinnati, OH 

THE PROGRAMMA III 

I thought I would let you know how much I 
enjoyed building the Programma til, and best 
of all the application and use of it. 1 was able to 
buiid it in 12 hours' time. 

When 1 fired it up, I found one wiring en-or 
and one bad IC. The LM380N went up in 
smoke. The reason for that was that it went 
into oscillation (448 kHz) out of pin-8 output 
and couldn't handle the power dissipation. I 
cured the problem of oscillation by referring to 
the Nationa! Linear Data Bool(, page 1 0-42, 
note 4. If oscillation exists under some load 
conditions, add 2.7 ohm in series with pin 8. 
Thought 1 would let you know about that, in 
case someone else has the same problem. 

Ail in all, it was a fine project and I loved it. I 
have learned more about IC's these past two 
weeks, using your Programma III, than in the 
previous 10 years. I have even fixed a way 
with the plugs to test op-amps. 
GEORGE STEINER 
Sacramento, CA R-E 



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Make the most of TVs new potential. 
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Service, Parts & Accessories Division 

llOOO Seymour Avenue 

Franklin Park, Illinois 60131 




EQUIPMENT REPORTS 



B&K-Dynascan Models 

1653 and 1655 Variable 

Voltage Supplies 




B&K 1653/16S5 




OVERALL 
PRICE 


1 M 1 1 1 M 1 1 


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circle 103 on free information card 

we've felt for a udng time that one 
of the most useful pieces of test equip- 
ment for servicing TV sets is the variable- 



voltage transformer (Variac). Now, 
B&K-Dynascan (6460 West Cortland 
Street, Chicago, IL 60635) has come up 



with a couple of units that are even better. 
Those are their model 7 65 J and 7655 
(shown) isolated variable- voltage suppl- 
ies. The advantage that those have over a 
standard Variac is that they also isolate 
hot-chassis sets. That's essential con- 
sidering that so many modem TV sets use 
full-wave bridges right across the AC 
Une. A chassis like that is hot to every- 
thing, (including yourtest instmment!) so 
an isolation transformer is necessary for 
safe servicing. 

The difference between the two models 
lies in their current ratings, and the inclu- 
sion of some extras on the 7(555, The 7d5i 
has a 2-amp current rating, ample for 
practically all TV sets. The 7655 has a 
4-amp rating, and also has a variable volt- 
age soldering-iron outlet on the back. 
With that, you can keep the iron hot 
enough to work, yet cool enough to save 
tips. 



CO 
O 

o 

1— 
O 
UJ 



Q 

Q 

24 




One source 

for thousands 

of VCR parts. 



RCA VCR parts are available from more than 600 
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One more thing. Kit prices are lower than 
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What if there were a 
faster way to build and 
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There is. Circuit-Strip from AP 
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Circuit-Strip solderless bread- 
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AWC solid hook-up wire. If you 
want to make a circuit change, 
just unplug the components in- 
volved and start over, it's just 
that easy. Circuit-Strips feature 
610 plug-in tie-points and have 
a capacity of up to 6 14- pin 
Dtps. Four separate distribu- 
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each give you access for 
power, ground or signal. 



What if it were easier to 
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locations in a circuit? 

It is. Circuit-Strip has a motded- 
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point Schematics can be la- 
beled with each tie-point loca- 
tion to make circuit building 
faster and troubleshooting 
easier circuit-Strip is ideal for 
electronic training programs as 
well as laboratory use. 




What if Circuit-Strip had 
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It does. Circuit-Strip now carries' 
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What if you need more 
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That's easy, too. Just call toll free' 
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the distributor near you. (In 
Ohio, call collect (216) 354-2101.) 




A P PRODUCTS INCORPORATED 

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[216)354-2101 

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Phone: (071 57) 62434 

TLX: 841 07 23384 

CIRCLE 56 ON FREE INFORMATION CARD 



Both units have a front-panel meter that 
measures voltage and current. The met- 
er's function is selected by pushbutton 
switches. On the J 653, the meter mea- 
sures voltages when the button is in, cur- 
rent when it is out. The 1655 has separate 
pushbuttons for voltage, two current 
ranges (0-2 and 0-4 amps), and a special 
leakage test for checking the isolation of 
any exposed metal parts to either the 
ground side of the line or to the hot side. 
The test probe for that last function is 
pennanendy connected; all you have to 
do is pick up the probe, push the button 
and you're ready. Leakage is read on the 
meter in microamps. Incidently, if you 
read more than 500 microamps, some- 



thing is definitely wrong in the set! That is 
the standard maximum value specified by 
OSHA, UL and CSA. Some makers spe- 
cify even a lower limit for greater safety. 

As we mentioned earlier, you need an 
isolation transformer when working with 
hot-chassis sets. Both of the B&K units 
have very high isolation (leakage less 
than 0. 1 mA). There is one isolated outlet 
on the 1653, and two on the 1655. 
However, the manufacturer warns 
against plugging two hot-chassis sets into 
the 1655 at the same time. There is always 
a chance that the two will be hot to one 
another, and cause damage to something. 

The load current can be accurately read 
with either unit. That is useful for such 



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things as checking for nuisance tripping 
of circuit breakers. To do that, check the 
rating of the breaker in the service data, 
then plug it in and bring up the current 
slowly to see if the breaker is tripping too 
fast. That isn't at all uncommon, and it 
can lead you to unnecessary testing to find 
out if the set has too much leakage, etc. If, 
for instance, the breaker is rated 1.9 
amps, but trips at only 1.5 amps, it's 
obviously bad. 

Sets with problems that show up only 
with high or low line-voltage can be 
checked instantly. (Those are the ones 
that work fine in the shop, but act up as 
soon as they are taken home.) High line- 
voltage should be suspected if the set has 
a history of blowing out output transis- 
tors, etc. To assure yourself that the set 
will work fine at low (105-volts AC) or 
high (125- volts AC) line-vottages, sim- 
ply use either device to check operation at 
the extremes. 

The standard use for devices such as 
those is to raise the line voltage slowly 
enough to allow you to perform some 
tests on the set before blowing out the 
output transistor, etc. Be sure to watch the 
line current while doing that. The normal 
load current is provided on the schematic 
(or should be!) 

The units' meter is very accurate; we 
checked readings against a very accurate 
DVM and found them to be right on the 
button. They claim an accuracy of ±5% 
full scale, but our tests showed it to be 
even better than that. 

In all, then, those are versatile, useful 
instruments that make servicing safer for 
the set and yourself. They are also well 
made. As evidence of that, one of the 
ones sent for review had been badly mis- 
handled by the shipping company — the 
fr-ont panel, as well as the shaft of the 
Variac control, had been bent. For curios- 
ity's sake we tried it out before sending it 
back for adjustment. It worked perfectly. 

The model 1653 carries a suggested list 

price of $165; the model 1655 carries a 

suggested list price of $350. R-E 

continued on page 30 



ELECTRONIC 
■vERvicf 




"If you think that's bad, you should try 
turning it on when it's plugged in!" 



CIRCLE 18 ON FREE INFORMATION CARD 



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We've added 32 extra pages, and a 
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determine which RGA device will best fulfill 
your f^RO requirements. There is even a 
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The RCA Industrial/MRO Guide, #1K7304. 
One source for all your JEDEC and 
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see your local RCA Industrial/MRO distribu- 
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every budget-and need, Standard features on all nnodels include an input impedance of 1 megohm witti 50- 
pF;;rnaximum input ypitage of 350 V;,trigger modes in.auto, internal, external and line; slope that's + or -.. 
pelectabief; graticule (4:x5 division of 0.25" each); dual power sources operating either internally fronri_ 
fechar^able lead acid baitteries or externally from 115 VAC or 230 VAC (50-60 Hz) via plug-in transformer; 
handy size (2.9"H x.6.4''Wx &.0"D) and-weighs just 3 lbs.* • ■ -| — p-p 
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POWER SUPPLIES 




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.varljtiltt; 0-3A In tour ntn^n 

Jb1a cumnl ikmlL; 
...-M|.p*r(ipt for floltd •tet»4i«ivie^ig- 



1 JLi?(ciu«iyfl Erapklna circuit. 

■ Flxvd DUlpul BVDC, 5A 
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j ■ FuHy AUtQiriatlt:, current-lbnHed 
- --overloKJ protection- 



BECKMAN'S 



rtCIRCUITMATE 

AVAILABLE NOW UNDER S100 



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1 i J 4^-^-L 

M 40 — avi^fgitrnulffmeter 



Ciromtmate Dl 

0^8% Vdc accuracy, diode! test, auto- 
polarity, auto-zero, auto-decimal 



$ 



— 1 — __: — — L ■■ i 

Oircuitmate DM 45— !314ldig^_i 
mulTl meter; 0t5%'T?ctb accuracy, uj i 

diode test, continuity beeper, 10 ^ 
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MODEL $04095 
3020 ** ' ^ 
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MODEL 3010 

■ Sltieriqvere *rid'lrtin§rrqir^n^' 
t variola and llxffd TTL outpuli 



SWEEP FUNCTION 
MODEL 3020 



■ 0.1 Hz toj 1MHz in tM rung* ■ 

■ Typjcti sinft wave dlittKllon undiir 
ilfom IHalo iCBkHi . . — ► 



■ Four Instrumflfili hn ano pacKagC" 
•' -tWAcp gcnerat^T, function gen^at'df. 

pulie gemerfttor, lone^uritgenarator 

■ lOOO:l turning ra,nga 
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E-3M*tt-| j^ ^ 

r*nga | 1 



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CAPACITANCE METERS 



1 I ! i I 



5189^5 SI5995 



WAS ^238. 
MODEL 630 

■ Automatically mea- 
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Irom 0.1 pF to aOOmE. 

■ 0.1 pF resolution 

■ 0.2% basic 
accuracy 



WAS M92. 
_MODEL820 

■ Resolves to 0.1 pF 

■ 4 digit easy-io-read 
—LED display 

^■„Fuse protected 
against charged 
— p capacitors 



3V2 digit LCD display ■ Overrange indication 




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■ Mutercharga & Vtw ililpped wHhIn 24 houn. 

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Price does not include probes, 
"Probes $50^ a pair when purcliased with 
scope. $10; shipping within continental U-.S7 



All Hitachi Oscilloscopes feature 
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OSCILLOSCOPES 



! GALLFORt 
OUft^PRiCta 



1 fnV/div high sensitivity design. Effective for 
-measurement of weak sign^lsr^ — i- ' ' 

Employs TV sync separator circuitry with one 
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vertical signals, | 1 1 | | [ 1 1 I ' 



• Built-in signal delay line enables front observation 
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Now with HI/LO Drive 



INDUSTRIAL 
TRANSISTOR 
TESTErj— 

WAS S249. ' ^ 

MODEL ■ ^ 
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Wclrks |in-dircult W^en 
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j-ldentifies all three tran-- 
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MULTIMETERS 



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True RMS measure- 



MODEL 80G2A 



■ Basic dc accura- 
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10 nA and 10 mfli 
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$349 



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merits to 30 kHz, 

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accuracy 

6.b57o; 10 
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■-Beeper ■ 



$279 




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Circle Reader Service 7 for more information 



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Ti^THE TEST EQUIPMENT SPECIALISTS 



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cians. 



Now you can order 
the "Study Guide lor 
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Technicians. It includes material 
covering the most often missed 
questions on the Associate CET 
Exam. BVi" x It", paperback, 



Send check to ISCET, 2703 W. 
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Name 

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State 



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copies @ $5.00 ea^ 



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EQUIPMENT REPORTS 



continued from page 26 



Finger Print Control 
Module for Epson Printers 



SOME OF THE MORE POPULAR PRINTERS, 

such as the the Epson MX-80JMX-100 
printers and their clones — such as the 
printer for the IBM PC — have extended 
software-programmable "fonts" (print 
styles). They include 10 (standard) pitch, 
16.5 (compressed) pitch, expanded size, 
italics, double strike, enhanced printing, 
or almost any possible combination of 
type styles. For example, it's possible to 
have the Epson print enhanced, ex- 
panded, italics in either pitch. 

Unfortunately, the printers' features 
are software driven by control codes from 
within the program or by a direct state- 
ment (command) from BASIC, such as 
"LPRINT CHR$(27)'P'." While some 
software, such as word-processing soft- 
ware, makes provision for a few printer 
codes, other software doesn't. Even the 
few non word- processors that permit ini- 
tial printer-setup codes rarely allow the 
user to change the setup once the printing 
is under way. 

That's where Finger Prim from Dres- 
selhaus Computer Products (PO Box 929, 




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SINTEC COMPANY 

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CO 

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When Ordering 

Call Toll Free: 

1 -800-526-5960 

In NJ call (201) 996-4093 

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CIRCLE 104 ON FREE INFORMATION CARD 



Dresselhaus Finger Print 




OVERALL 
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OF USE 


■■■■■■■■■I 


INSTRUCTION . 1 1 1 1 1 1 1 1 f 


/value 


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Azuza, CA 91702) comes in. It is a user- 
installed retrofit device for the Epson (and 
similar) printers that allows many of the 
most commonly used print functions to be 
pre-programmed by simply touching the 
printer's control buttons — the three but- 
tons located on the top of the printer 
which normally place the printer on/off 
line, formfeed (ff) the paper, and 
linefeed (lf) the paper. 

With Finger Print, the user can select 
the setup function(s) before printing 
starts, and even change the setup during 
the run. If the software can't be pro- 
grammed to stop the printer for a change 
in setup (type style), the printer can be 
stopped with its own on/off line switch, 
the new setup can be programmed in, and 
the printer restarted. 

Fingerprint provides either nine or ten 
functions, depending on whether the 
Epson printer has Graftrax or Graftrax- 
Plus. If the printer has Graftrax Plus the 
functions are: 1 : reset (clears all setup — 
restores printer to normal power-up state, 
and flushes the printer's own buffer); 2: 
co.MPRESSED pitiNT (16.5 charactcrs-pcr- 
inch); 3: double wide (does not auto- 
matically cancel at the end of the print 
line); 4: emphasized (creates bold print); 
5: DOUBLE STRittE Creates super-bold 
printing when used with emphasized 
command or it can be combined with 
compressed print for enhanced "micro 
tyjje"); 6: perforation skipover (when 
printing near the bottom of the page the 
printing automatically skips over the per- 
forations of tractor-fed paper); 7: indent 
(indents left margin six spaces so print- 
outs can be punched and put into binders 



CIRCLE 82 ON FREE INFORMATION CARD 



electronic components 



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BUG TRAY^W — stores in Bug Cage ■ Molded 

plastic • Three styies: Open (1 compartmenl); Ver- 
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Horizontal Bug Tray (2) BTH-002 

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LSI BIG BUG BOXTM — Designed to slore 
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A NT I- ST AT IC 



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PART NO BGX.002B (2 Boxes) 

ANTI-STATiC 

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JOYS 



PART NO. 



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CONNECTORS 



JE224 

Adjustable Switching 

Power Supply Kit 

4-24VDC REGULATED, UP TO SAMP 






ICKS 





[Wttri plimi 



Pari No. 



9 Pin Pluj DE9P 

9 Pin SockM DE9S 

15 Pin Plug DA15P 

IS Pin Sockol DAiSS 

25PinPlug(IVl8StsRS232) DB25P 

25PinSoi:l(et(MeetsRS232) DB25S 

37 Pin Plug DC37P 

37 Pin SoEkat DC37S 

50 Pin Plus nosop 

SO Pin Sotkat D050S 

Accessories 

HoQd for DE-9 Series Connaclors 1I£'9H 

HoDiJ (or DA-15 Ssrlai Connsclors DE-15H 

HoQdlor QB25SBrlas ConneclDrs 0B25H 

Hand lor DC37 Sgrlis Connsclors DB37H 

Mood lor DD50 Serlas Connaclars DD50H 




JS-SK 5K Linear Taper Pols 

JS-100K 100K Linear Taper Pots 

JS-150K IS-OK Li near Taper Pols 

JVC.40 40K(2)VideoConlrollerinease 



The JE224 Is a high-e((ictency power supply utilizing a 
LH1605 5 amp switching regulator. The LH1605 pro- 
vides high ourrenl oulput while mainlalning a small 
physical configuration. Open frame type to allow 
mounting Into restricted areas. 

FEATURES: Adjustable 4-24VOC: 6VDC @ 5A, 6VDC 
U 4.eA, 9VDC ® 1.1 A, 12V0C « 3.3A. 18V0C ® 1.9A, 
24VDC IS .5A. Overvoltage prolection. Input; 115V AC 
5O(60Hz. Output variations wilhin 20mV. Size: 8.24 "L x 
4,25 "W X 2.25 "H. Weight: 3.25 lbs. 

PART NO JE224KIT 




Muffin-Style Fan 

• I05clm iree air delivery 

• 4. SB' sq. X 1,50" depth 

■ 10 years continuous duty at 20 'C 

• Impedance protected, 
ambients to 70*C 

• 116V 50(60H2 14W 

• Weight; 17 02. 

PART NO MU2A1 




Sprite-Style Fan 

• 36cfm free air delivery 
•3.U5"sq. K t.S65' depth 
' 10 years continuous duly st 20 "C 

• 115V50/60HZ 

PART NO. ..PWS2107 



Anti-Theft Auto Alarm System 

• AudiDlie hmn ss activated wlrsn door or Irunk is 
gpened • Alarm sountfs lor 3 min. — uiHess tiurned 
Qlf by secfeJ 3■ai9^[ code • Wire cutling will noi 
deacti^raie alarm • Codeset by owner. • Usescn'iy 
0.01mA power. • System compierte w/cne ijiack- 
i\Qx. control unit, on^ personal codefl keyboard; 2 
sets o1 sensors: one audl&le horn; & wiring (incl. 
one 10A tuse). 

PART NO CA-06flutG Alarm 




It 



Stereo 
Cassette Player 

with FM Stereo Tuner Pack 

• Lightweight Headphones 

• Cr02/Meta1/Normal 
Tape Selector 

• Anti-Rolling Mechanism 

FEATURES: • Blue carrying case, shoulder strap, belt strap, 
lightweight headptiones, FM stereo tuner pack & Instructloh manual 
■ Talltilne ■ Tore selector • Cr02/MetaUNormal tape selector • LEO 
operation indicalor • Built-in microphone • Stop/eject, play, 
rewind/ rev le;M. last lorward/oue, lape/radio selector functions * Vol. 
control • Ext. power input jack • Headphone jack • Auto-slop 
mechanism {shuts off player when tape ends) • Ahti-roiling 
mechanism (prevents sound from quivering when walking, jogging, 
etc.] - Weighl; 13 0^ • Re^^uires 4 A A batieries (not Included) * Size; 
6'Lx4-Wx 1-1/8 "H 

PART NO MODEL TWF-802 



DIODES 

CRYSTALS 

TRANSISTORS 

SOCKETS 

KITS 
SWITCHES 
RESISTORS 

LEDS 
HEAT SINKS 
KEYBOARDS 

WIRE 

SPEAKERS 

TOOLS 

CORDS 

SOLDER 

IC'S 
BOOKS 
CAPACITORS 
and more... 




Door Security System 

• CodBd door aiarm,. • Insian! a? 7-secQTiij tfelay 
system, • A?arm aciJvaled as door is opened 

• Can be de -activated by pressing qersonai code. 

• Power: One 9V battery (not inci,). * System in- 
cludes one pei'sonal co^ed keyboard anij one 
magnetic sensor. 

PART NO ES-07om.Au.m 



Hame Alarm System 

• Self-lnstallallon • Presellable v^/lnrJivitSuas 
3-dl9i1 code - no key tiec. ■ Ifisiant or lO-sec. 
[felayed warrting system • Alarm system Incl. win- 
dow Attnor oontacls • One 9V battery required (not 
incl.) Low power consumplton (D.OimA) ■ Loud 
autilble alarm |90dli) • Delayed exit f earn re 

• System complete w/one conliot station with 
b'jiil-ln siren and lest button: 4 magnelic contacl 
se:s £ cooneciing wires tor entire system 

PART NO. .ST-05 Home warm Sysltm 



-tSLf- ,' 



Mini Stereo 
AM/FM 
Receiver 



UTlc 



WITH HEADPHONES For Joggers, 
Cyclists, Skaters & Sports Events 



FEATURES: Lightweight headphones. Lett/right balance control. 
Fuil tidetlty stereo sound. Additional black sott carrying case Sl 
shoulder strap. Belt-clip (hands-free). Uses 3 AA cell batteries (not 
Included). Compact size: 3-Ve"H x 4.7(8 'L x 1 'O, Wt. 6 oi. 



PART NO. 



.MODEL 2830 



CIRCLE 4 ON F»EE INFORMATION CARD 



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31 



without obscuring part of the copy); 8: 
EIGHT UNES-PER-iNCH (uonnal IS 6 lines- 
per-inch); 9: italics; 10: fine print 
(about 5-point size — sets superscript 
mode and 121ines-per-inch). Function 10 
isn't implemented on Grafirax models. 

Using the module 

The Finger Prim functions are entered 
through the three control buttons on the 
top of the printer, which retain their nor- 
mal functions of on/off line, formfeed, 
and linefeed. If the on line button is held 
down for about a second, the printer's 
" bell " beeps to tell the user that the print- 
er is now in the "Finger Print" mode. 
The beep counts as one entry, or reset, 
which clears the printer and flushes its 
buffer. To indent the left margin, which is 
function 7, the user presses the online 
button for six more beeps (for a total of 7). 
Pressing the printer's ff button programs 
the command into the printer. Additional 
functions such as double- wide, enhanced 
italics, the perforation skipover can be 
"stacked." When the Finger Print func- 
tions are programmed, pressing the lf 
(linefeed) button resets the printer con- 
trols back into normal operation. 

Any part of the setup can be changed 
whenever the printer is stopped. A func- 
tion is eliminated by simply "beeping" 
the appropriate number of times. For ex- 
ample, if you entered three beeps to turn 
on the double- wide printing, entering 



three more beeps will turn it off. Sim- 
ilarly, if the indent was turned on with 7 
beeps, 7 beeps will turn h off. 

Finger Print is completely hardware 
driven. It consists of a small printed- 
circuit module that is user-installed with- 
in the Epson printer as a substitute for the 
TC normally located in socket IB. The 
retrofit requires no soldering or cutting of 
existing printed-circuit foils. First, the 
cover is removed, then the IC is removed 
from the IB socket and installed in a 
matching socket on the Finger Print mod- 
ule. Next, the module is plugged into the 
printer's IB socket. A small clip terminal 
is slipped on an IC lead that has been bent 
outward, and a miniclip is slipped over 
the terminal of another IC within the 
printer. The whole installation from be- 
ginning to end takes about lOminutes, 15 
if you're extra careful. 

It's a simple task for someone with just 
a minimum of electronic assembly expe- 
rience, but if you're not used to close- 
quarter assembly have someone else do it. 
Actually, a Radio-Electronics reader 
should have no problems because the 
documentation — -the assembly and use 
manual — is outstanding; possibly the best 
in the entire computer industry. It is type- 
set, printed on coated stock with photo- 
graphic reproductions and hne artwork 
exceeding the quality you would expect to 
llnd in a professional photographic maga- 
zine. And all this is topped off with su- 



perbly written installation instructions 
that leaves nothing to chance or any dan- 
ger of misinterpretation. 

An equally well-prepared self- 
adhering metallic label that lists the Fin- 
ger Print function "beep" commands is 
supplied for the front panel of the printer. 

As far as gadgets for personal comput- 
ers are concerned, Finger Prim is one of 
the best and most reliable accessory de- 
vices we have used, installed, or ser- 
viced. The printed-circuit module doesn't 
look like much, but it does one heck of a 
job. 

Fingerprint is available by direct mail 
from Dresselhaus Computer Products for 
$59.95. It is also sold by some local com- 
puter dealers. A call to Dresselhaus will 
get you the name of the nearest store. R-E 

Global Specialties Model 
6000 Frequency Counter 

FOR MANY YEARS, A FREQUENCY COUN- 

ter was considered a luxury. However, 
because counters are so versatile — even 
for the hobbyist or radio amateur — and 
because their prices have fallen to reason- 
able levels, the frequency counter has be- 
come more of a necessity than a luxury. 
One instrument we examined recently 
was the model 6000 from Global 
Specialties Coi-poration (70 Fulton Ter- 
race. New Haven CT 06509). That coun- 
ter, with a frequency-measurement range 



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tipio 27 choices/ "Free , free, free . . . 




Hurry, hurry, step right up! 
it's RCA's Carnival ol Awards, 
And what a lineup of acts. 
First, the headliners: RCA 
receiving tubes, very popular 
with TV technicians for their 
top performance and depend- 
ability. 

Plus, a stupendous car- 
nival of valuable awards. 
Shown here are just a few of 
the 27 great gifts waiting for 
you. To earn them, just pur- 
chase RCA receiving tubes 
in required quantities from 
your participating RCA dis- 
tributor. Each purchase helps 
qualify you for the award of 
your choice. See your partici- 
pating RCA distributor for 
details. And come one, come 
all to RCA's Carnival of 
Awards! 



Tk^^^lk^^^^^^^^^^ 



32 



b^HB (D30 ~ -- 



CIRCLE 105 ON FREE INFORMATION CARD 



Globat Specialties Model 6000 


flUFMII 1 1 1 1 1 1 1 1 1 J 


EASE 
Of USE 


■■■"■"■1 


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MANUAL 


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osirF, 1 1 1 1 1 1 1 1 1 1 




1|Z|3|415|6|7|B|9|10 


^ 


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from 5 Hz to 650 MHz, is housed in a 
neat, compact plastic case. It has a large 
(0.43 inch) 8-digit LED display across the 
top of the panel. The display is easy to 
read, even in high ambient light, due to its 
contrast-enhancement filter. 

While there is no need for a range 
switch, there are two BNC input jacks on 
the panel. The a inplit jack is used for 
frequency inputs from 5 Hz up to 100 
MHz; the b input jack is used for inputs 
from 40 MHz up to 650 MHz. 

The 8-digit display reads out the fre- 
quency in kHz. For example, a frequency 
continued on page 38 



>s 



f^^^^s^^"" 



*«"*"''' Tes never 
for 




!BSO Eosf 29th Street Long Bsoch, Cofanin 90805 (2131 595-7621 



CIRCLE 69 ON FREE INFORMATION CARD 



wittt your purchase qf ^(^A *Mf§cewing ^uhest 




CG7170 

BAY-0-VAC "Magnum" 

5-Function Light 
Value: S2T.45 



CG717B 

Waring 

Ice Cream Parlor 

Value: 344.99 




CGTieg 
Ski I Cordless 
Screwdriver 
Value: S39.99 



CG716r 

American Tourlster 
5 Inch Attache Case 
Value: S56.00 





CG7163 
Cobra Cordless 
Extension Phone 
Value: S189.95 




CG7164 

Wittnauer "Saturn" 
Man's Quartz Watch 
Value: S175. 00 



CG7162 
Canon Palm-; 

Printing Calculator 
Value: $64,95 




CG716S 

St<il Double Insulated 

7V4"PowerSaw 

Value: SB5.99 



007180 
London Fog 
Man's Raincoa 

Value: S 150.00 



RGil ^"^^ 



Tubes 



RCA Distributor and Special Products Division. Deptford. NJ 08096 



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NTS Electronics 



Learn Robotics, 
Microcomputers, 
Microprocessors, 
Digital Video, Test 
Equipment and more 
with NTS knTRDHkC home 
training. Courses Include 
state-of-the-art equipment, 
lessons and texts to make 
your hands-on programs 
exciting and down-to- 
earth practical. 



NTS Intronic Training is a carefully developed 
and tested learning system providing a tho- 
rough intergration of advanced electronic 
hardware with modern lesson texts. The 
relationship between theory and practical 
applications is made clear through the 
hands-on experience of building and 
assembling kits of state-of-the-art 
equipment. Courses include a wide 
variety of test instruments, both digital 
and analog, as well as other units 
not shown here. And, depending on 
the NTS program you select, you 
can earn up to 30 CEU credits for 
successful completion. Our full- 
color catalog has complete 
y, details. NTS has taught 

industrial skills for over 
78 years — a record 
that has no equal. 




HERO 1 is included in two 
courses, one basic and one 
advanced. You'll cover 
principles of industrial 
electronics, microprocessor 
troubleshooting, fundamen- 
tals of mechanics, and robotic 
applications in industry. 
You'll learn analog and digital 
skills, radio control, fluidic, 
pneumatic and servo-mechanisms, 
as well as computer interfacing 
and robotic programming. 
HERO 1 , complete with arm, 
gripper and speech synthesis 
board, is a fully self-contained 
electro-mechanical robot — the 
featured unit in the most 
exciting training programs 
ever offered in home study. 




Training 



FIRST WITH TOMORROW'S 
TECHNOLOGY 



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1 . Advanced "Z Chassis" NTS/HEATH "Smart Set 

with computer space command remote control and 
space phone. Originate or receive telephone calls 
through this set and the number appears 
on the screen-store your police and other 
emergency numbers into memory which may 
be recalled and auto-dialed at any time. 
Traditional and incomparable picture quality 
Unit has Quartz Controlled Tuning, 178 
channel capacity, remote antenna switch 
accessory for reception of VCR, VDR, Broad- 
cast, Cable, Video Games, and Personal 
Computer input (no cable change) plus 
computer- controlled color. Featured 
in all-new Video Technology Course. 

2. NTS/HEATH HN89AIVIicrocom- 

puter is included in two programs. 

This famous and reliable unit features 

Floppy Disc Drive, 48K Memory on 

Board, CRT Terminal with its own 

Z-80 Processor, and standard 

keyboard as well as Numerical Input Keyboard. The growing 

importance of computer knowledge and skills have made 

these programs increasingly significant. The experience 

gained in assembling these kits is invaluable in the 

understanding of computer troubleshooting skills. 

3. NTS IVlicroprocessor Trainer is included in our Industrial and 
Microprocessor Technology Course. It is a portable unit, contained in 
a convenient high-impact carrying case. Hardware/ 
Firmware includes Monitor Operating System- 
Expandable User Memory-User Experimental On- 
Board Section-Breakpoint Editor-Single Step Trace- 
Cassette I/O. 




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TECHNICAL TRADE TRAINING SINCE 1 905 
Resident and Home-Study Schools 

4000 So. Figueroa St., Los Angeles, CA 90037 



NATIONAL TECHNICAL SCHOOLS "^f^ ^°^-^°^ 
4000 South Figueroa Street, Los Angeles, CA 90037 
Please send FREE color catalog on course checked below: 

D Robotics □ Computer Electronics 

D Digital Electronics D Video Technology 

D Auto Mechanics D Home Appliances 

D Air Conditioning /Solar Heating 



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TIMEX-SINCLAIR 

SOFTWARE 

Hardware / Books 



TSiaoo,Tsi500i2xm 



New from 
I Gladstone 
I Electronics! This 
I exciting new 34 
[page coior 
IcataiQg iists 
[arcade, fantasy, 
I and famiiy games, J 
I business and 
I educational 
■ programs; boolts 
J for beginners as 
I well as 
I experienced 
J users; hardware 
I add-ons and other| 
I peripherals for 
use with your 
TS1000;TS1500/ 
TS2000/ 2X81 
Home Computer! 



CALL or WRITE for 
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ORDER TOLL-FREE 

800-833-8400 

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Electronics Inc. 

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In Canada; Gladstone Electronics, 
Toronto aOO-26B-3S40. 



CIRCLE 71 ON FREE INFORMATION CARD 



EQUIPMENT REPORTS 



continued from page 33 



of 624 MHz would be shown as 
624000.00 kHz. (Decimal point place- 
ment is automatic.) Two red LED's at the 
left of the display indicate gate open and 

OVERFLOW, 

Controls 

There are four "push-push" controls 
across the bottom of the panel, more or 
less under the display. First is the power 
switch, which is marked standby/on. 
(No pilot light is necessary because when 
the 6000 is on, the display is lighted.) The 
STANDBY position is used in the similar 
model 6500. That model has a crystal 
oven that is kept running even when the 
rest of the circuitry is off. The standard 
model 6000 has a temperature- 
compensated crystal oscillator (often 
called TCXO), with a 3.579545 MHz 
crystal. The TCXO uses special com- 
ponents to minimize the effect of tem- 
perature on the crystal frequency. It has a 
rating of ± 1 ppm at 40°C ambient, and 
ages less than 4 ppm/year. The model 
6500 has a temperature-controlled crystal 
oven that keeps the crystal at a constant 
temperature and gives the oscillator a 
rating of 0.1 ppm from 10-40°C, and an 
aging rate of less than 1 ppm/year. 



Radio Electroiaics "''""' 



BOOKSTORE 



D Build Vouf Own Salellile TV Receiver $7.00 

D e-Ball Salellile TV Antenna 15.00 

n Build You( Own Robot $12,00 

D TV Descrambler (January. Hbmiy 1981) $3.00 

n Radio-ElectTOnics back Issues (1983) $3,00 

(Januaiy. February 1983 not available] 

Write in Issues desired 



□ Radio- Elect ran Ids back issues (1982). 
(January 1982 not available) 
Write in Issues desired 



. S3. 00 



D Badio-Electronles back issues (1981) $3.50 

(Mardti, December 1981 not *(ailabie) 

Write id issues desired 

D Etcti your own PC Boards S3. 00 

To order any of Ibe items indicated above, ctieck ofl Ihe ones 
you want Corrpiele ttie order fotm below, include ynur ps^- 
menl, ctieck or money order [DO NOT SEND CASH), and rrtail 
to Radio-Eleclrouics, ReprinI Departmenl, 200 Park Ave. 
Soutti, New York, NY 10003 Please allow 4-6 weeks lor 
delivery. 

II you need a copy of an article thai is In an issue we indlcale is 
unavailable you can order il direclly Irom us. We ctiarge 50f 
per page. Indicate the Issue (montti & year), pages and article 
desired, include payment in lull, plus shipping and baudling 
charge. 



D Special Projects (Spring 1991) J4.00 

D Sisecial Projects #4 (Sumrrer 1982) $4.00 

D Special Projects #5 (Winter 1983) $3.00 

D Special Projects #6 (Spring 1983) S3.00 

D Radio-Electronics Annual 1983 $2.50 

D How to Make PC Boards $2.00 

D All About Kits $2.00 

D Modern Electrics (Vol. 1, #1 $2,25 

April 1908) 
n Electro Importing Co. Catalog $4,95 

(1918) (176 pp) 



ARTICLE 



MONTH 



YEAR 



PAGES 



TOTAL RAISES 



. @ 50f eacti . 



TOTAL PRICE 



IMLTO: RadlD-Electronics 10-33 

Reprint Deparlmeni, 200 Park Ave, Soulti, New York, NY 10003 All payments mitsl be In U.S. funds 

Tolal price ol order $ 

Sales Tax (New York Slale Residents only) $ . 

Stripping & Handling (U.S, S Canada only) (Includes FIRST CLASS' POSTAGE) $1.00 per ilerr $ . 

All other ($2.00 per Item, sea mail) t 

($4.00 per Item, air mail) $ 

Total Enclosed $ 

Name 

Address . 

City 



. Stale - 



.Zip. 



The gate/seconds control will set 
gate times of 0.1, 1.0, and lO.Oseconds; 
a red LED lights to show which one is in 
use. Next to the gate control is the input 
SELECT button, which chooses between 
the two inputs. Again, LED's show 
which is in use. 

For low-frequency readings (only on 
the A input), a lowpass filter can be 
switched into the input circuit simply by 
pressing the lowpass filter button. 
That filter makes it easier to make low- 
frequency readings in noisy (high-RF) 
environments. The filter response is flat 
up to 30 kHz. Above that, the input 
sensitivity is reduced by 3-dB-per- 
octave. That control also has a red LED 
indicator to show that it is in use. 

The A input has a high input impedance 
{ 1 megohm) and an input capacitance of 
25 pF, The sensitivity of that input is 10 
millivolts RMS at the low -frequency end, 
rising to 40 mV at 50 MHz. The B input 
has a load impedance of 50 ohms, to 
match common transmission lines. Its 
sensitivity is 50 mV RMS at 40 MHz, 
rising to 150V RMS at 600 MHz. The 
maximum allowable input voltage is 5.0 
V peak. 

The instruction book that came with the 
counter is quite complete. It has full in- 
structions on use, setup tests, plus a good 
explanation of the counter's circuitry. 
Calibration procedures are given; the 
calibration trimmer is accessible from the 
bottom of the case. A signal generator at 
least 5 times as accurate and stable as the 
instrument being calibrated is needed for 
calibration. (Incidentally, for quick 
checks, you can read the frequency of the 
3,579545 MHz oscillator in any TV Set 
on a network picture!) 

The model 6000 is priced at $399,95; 
the Model 6500 with the crystal oven is 
$449.95. Those are good prices for such 
instruments, and well below average. So 
if you require accurate frequency 
measurement of anything from the fre- 
quency of an ultrasonic remote control 
unit up to a UHF radio transmitter, keep 
the 6000/6500 in mind. R-E 

continued on page 40 




ft 



Our innovation. 




Tlieir imitation 







If you need any one of nine microwave oven rectifiers 
now, only Philips ECG is ready to deliver today. 

You can tell where your new markets are by checking 
out what's new from Philips ECG. 
When microwave ovens became popular, 
Philips ECG was ready first with Sylvania 
microwave oven components. When the 
computer boom hit, we were first again. 
In fact, on average, we introduce roughly 
300 new replacement senniconductors 
eveiy year- far more than anyone else in 
the business. 

Maybe that's why eyen our competi- 
tion looks to us first for new ideas. But 
although they copy us, they never quite 
equal either our superior performance 
specs or our cross-reference accuracy. So 
for the best insurance against premature 



Semjconductora 
MjHiqr Roplncanient Guktq 



• EipiipfTMnt MalntaKumia >iiri RapdJi 




failures and caE backs, demand parts from Philips ECG. 

We're the only source you'll ever need for replacement 

semiconductors that fit and work. 

But just because the imitators can't 
keep up with us doesn't mean it's hard for 
you to keep up-to-date . To stay posted on 
all our latest advances in profit-generating 
replacement parts, stop by your Philips 
ECG distributor's and pick up your copy 
of oui' new, expanded Master Guide 
(ECG212L) and our ECG Counterpoints 
new product update. For the name and 
number of your nearest distributor, 
call 1-800-225-8326 toll free (in MA, dial 
1-617-890-6107). Or just send $3.25 for 
your Master Guide to Philips ECG, Inc. , 
Dept. RE, 70 Empire Drive, West Seneca, 
NY 14224. 



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PhilipsECG 



If it's ECC: it fits. And it worics. 



A North American Philips Company 



CIRCLE 70 ON FREE INFORMATION CARD 



IIMTRODUCIIMG 




THE 

PROTECTOR 

6000" 

TOTAL PROTECTION FOR YOUR 
SENSITIVE ELECTRONIC EQUIPMENT. 

Something that yoL can't even see may be slowly 
but surely killing your expensive electronic eq Jip- 
ment. It's transient voltage, and it can be fatal to 
computers, medical equipment, electronic games, 
videotape recorders, electronic test equipment, 
electronic cash registers — almost any of today's 
sopfiisticated solid state equipment. 

THE TRANSIENT VOLTAGE PROBLEM. 

Most ot this modern electronic equipment uses 
LSI and MOS semiconductor devices which are 
extremely sensitive to voltage transient surges or 
"glitches." In fact, a large percentage of equip- 
ment failures can be directly linked to ttie damag- 
ing effects of over-voltage line transients to 
unprotected, tiigtily fragile components. 

THE PROTECTOR 6000 " SOLUTION. 

Not to be confused witfi ottier transient voltage 
protection units available today. THE PROTECTOR 
6000 uses state-of-the-art solid state components 
and exclusive circuitry to provide you with com- 
plete and total protection from transient voltage 
surges of up to 6,000 volts. THE PROTECTOR 
6000 uses silicon PN junction devices — proven 
to provide the fastest response to surges! Ttiey 
have a statistical life expectancy of over 20 years. 
THE PROTECTOR 6000 bas a maximum clamping 
voltage of only 335 volts, well below tfie voltage 
rating of other transient protection devices which 
commonly use much less effective fwlOV's or gas 
discharge tubes. It also provides full protection 
from electro-magnetic and radio frequency inter- 
ference. The unit operates in both common and 
differential modes, and is outfitted with a circuit 
breaker to guard against severe current overloads 
over 15 amps. 

Why take chances with your expensive eleDtronic 
equipment? For full details contact your local 
NTE distributor or write: 



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NTE 



New -Tone Electronics, inc. 

44 Farrand St., Bloomf ield, NJ 07003 

THE PEOPLE WHO BRING YOU THE TCG 
LINE OF SEMICONDUCTORS. 

© 1983 hJew-Tone Electronics, Inc. 



EQUIPMENT REPORTS 



continued from page 38 



Tektronix Model 213 DMM 
Oscilloscope 




CIRCLE 106 ON FREE INFORMATION CARD 



Tektronix 213 


OVERALL 1 1 1 1 1 1 1 
PHICe ■■■■■■■■ 








EUSEJ I 1 1 11 1 
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INSTRUCTION II M 1 ' 1 1 












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/VALUE ■■■■■■■ 


1 ^laUlsUlziB 


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[F YOU WERE TO ASK A FIELD TECHNICIAN 

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LEARN HOW 

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Train a! hame in spare tlma! No 
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You'li know what really happens when you have a com- 
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their language.. .understand why and tiow things hap- 
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• TIMEX COMPUTER INCLUDED WITH 

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ICS 



COMPUTER TRAINING, Uept, DE093 
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Please rush me free facts and color brochure 
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time. No cost. No obligation. 



Addrtti 

I CFty/Stila/ZIp 



that he would desperately want if it really 
existed, what you might wind up with is 
the Tektronix (PO Box 500, Beaverton, 
OR 97077) model 213 DMM oscillo- 
scope. That's right — a DMM and a 
single-channel oscilloscope all wrapped 
up into one package. And to make things 
even nicer, that package raea.su res just 
5.35-inches wide, by 2.95-inches high, 
by 9.05-inches long — smaller than some 
portable DMM's atone — and weighs 3.7 
pounds. Finally, the whole thing is bat- 
tery operated, has its own built-in rechar- 
gcr, and comes with the primary test- 
leads permanently attached, (Some addi- 
tional test leads are needed for some 
DMM functions — more on that later.) 

Oscilloscope 

All of the oscilloscope's functions are 
selected using a row of pushbuttons on the 
front of the unit. Also on the front panel 
are two rotary switches used to select the 
vertical (voUs/mA-per-division) and the 
horizontal (seconds-per-division) de- 
flection; settings on those switches are 
laid out in the familiar 1-2-5 sequence. 

The rest of the controls are located 
along the side of the unit. Slide switches 
are used to select how the signal is cou- 
pled to the input amplifier (AC, DC, or 
ground), to chose the triggering mode 
(external DC, normal internal AC, and 
automatic internal AC), and to tuni the 
unit on and off. 

Looking a little closer at the triggering 
modes for just a second, in the normal 
internal AC mode, no trace appears when 
the input signal is not sufficient to cause 
triggering. In the automatic internal AC 
mode, the sweep mns free to provide a 
reference trace when the signal is in- 
sufficient to cause triggering. 

Moving on, six continuously variable 
controls are used to set the triggering 
level, the beam intensity, the horizontal 
and vertical position of the trace, and 
magnification in the horizontal and ver- 
tical directions. The last two controls may 
vary from what you might be used to. On 
many scopes, the level of magnification is 
switch- selected, which limits you to just a 
few discrete settings (and sometimes just 
one). Here, the magnification is con- 
tinuously variable and can be set for be- 
tween 1 and 2.5 times the calibrated ver- 
tical (volts/mA-per-division) setting and 
1 and 5 times the calibrated horizontal 
setting. Note, however, that the magni- 
fied displays are not calibrated. 
Magnification is turned off by tuming the 
vertical control fully clockwise, and the 
horizontal control fully counter- 
clockwise. 

The remaining controls are only occa- 
sionally used and are screwdriver- 
adjustable. Those are the DC balance, 
focus, vertical gain, sweep calibrate, and 
trace rotate. 

Tuming to the scope's specifications, 
the bandwidth varies with the selected 
vertical deflection. For settings of 5-/nA- 



For more proficient color TV servicing, 
in-home and on the bench . . . 



RCil 

Field Service Guide 

and Service Literature Digest 

Up-to-date service information compiled 
from regular RCA color TV service literature 
... in convenient, easy-to-use 17" x 11" 
volumes that each cover two years of RCA 
color TV models . . . designed especially for 
in-home servicing but equally useful as 
handy bench references . . . featuring: 

• Complete chassis and tuning system 
schematics 

• Chassis circuit board illustrations 

• Disassembly/reassembly instructions 

• Comprehensive parts lists 

• Tables of common trouble symptoms 
and typical causes 

• Quick- Find Indexes and cross references 



f ■.» S*n^t Cu4« - V«| t 




Volume 9 

Field Service Guide 

and Service Literature IDigest 



RCA Service Literature tor 
Color TV Model Years 
ig81-19S2 



VOLUME 9 NOW AVAILABLE! 

This latest addition to RCA's popular series of 
service literature digests covers model years 
1981-1982 and RCA color TV chassis CTC91, 
92, 96, 97, 99, 101, 107, 108, 109, 110, 111, 115 
. . .520 pages, 17" x 11", saddlestitched . . . 
ONLY $14.95 

VOLUME STILL AVAILABLE 

Covers model years 1979-1980 and RCA color 
TV chassis CTC 85, 86, 87, 88, 89, 90, 91 , 92, 93, 
96, 97, 99, 101 .. . 424 pages, 17" x 11", 
saddlestitched . . . ONLY $12.95 



SPECIAL LIMITED-TIME TWO-VOLUME OFFER! 

Save $5.40. . . Volume 8 and 9 together cover four years of RCA color 
TV models . . . Order now and receive both volumes for only $22.50. 

RCA Field Service Guide Order Form 

Check appropriate boxes, indicate quantities & prices, enclose check payable to "RCA Consumer Electronics" 



MAIL TO: RCA TECHNICAL PUBLICATIONS 1-450 
P.O. Box 1976 
Indianapolis, IN 46206 



FIELD SERVICE GUIDES 

□ VOLUME 9 

□ VOLUME 8 

n TWO-VOLUME SPECIAL OFFER (VOLS. 8 & 9) 

(PLEASE PRiNT) 

NAME 



STREET ADDRESS 
CtTY 



QUANTITY 



PRICE 

$14.95 ea. 
$12.95 ea. 
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TOTAL (AMOUNT OF YOUR CHECK) 



PRICE TOTAL 



. STATE 



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RE 1083 




Music 
Teacher 

I 

in a Box? 

To get ahead in music, you need to 
know music theorv. PAIA's Ctiord Compu- 
ter helps you understand both music and 
keyboards better by cramming the equiva- 
lent of pages and pages of music theory 
into a compact caicuialor-styie package. 

The Chord Computer is easy to use. 
Simpiy select a chord letter, and the Chord 
Computer's LCD 3 1 -key piano keyboard 
display will show which notes to olay for 
the seiecled chord. Press another button 
to choose sharp, flat, major, minor, aug- 
mented, diminished, 6th, 7th or 9th chords 
~ including inversions. The Chord Compu- 
ter can also display complete scales for all 
keys, or even transpose them at the touch 
of a button. 

Serious about music? The Chord Com- 
puter could be the best investment you'll 
ever make op|y $59.95 (plus $2.50 
postage/handling) Order yours today . 



CHARGE TO VISA OR MC TOLL-FREE 
1-800-654-8657 wm 1., jhm csr mon fri 



Ask for your free PAtA catalog. 

Direct mail orders and inquiries to: Dept.ion 

BliA Electronics, Inc. 

1020 W.Wilsh ire . OtlahomaCitv, OK731li (4I151943 ilMO 
CIRCLE 52 ON FREE INFORMATION CARD 



to lO-^A-per-division, the bandwidth is 
DC to at least 200 kHz; for settings of 
20-^A- to 200-mA-per division and 5- 
mV- to lO-mV-per-division, the band- 
width is DC to at least 400 kHz, and for 
settings of 20-mV- to 100-volts-per- 
division, the bandwidth is DC to at least 1 
MHz. Accuracy is claimed to be 3% or 
better. The maximum safe input voltage 
is rated at 500 (DC 4- AC peak) DC 
coupled, and 800 (DC + AC peak) AC 
coupled; the maximum safe current is 
rated at 2-amps RMS or 3-amps peak. 
The sweep rate can be varied between 
500-ms- and 2-/j,s-per-divisior; accuracy 
is claimed to be within 5%. 

DMM 

Now we get to what this reviewer con- 
siders the most interesting part of the 
unit — the built-in 3'/2-digit DMM, Using 
that DMM, measurements from 0. 1 to 
1000 volts, 0.1 to 1000 mA, 1 kilohm to 
10 megohms can be made. All AC 
measurements are made in true RMS. 
Overrange inputs of up to 200% full scale 
can be accommodated on all ranges ex- 
cept 1000 volts. Range selection, includ- 
ing resistance, is done using the vertical 
deflection (volts/mA-per-di vision) 
switch. The voltage and current settings 
are made using the same scale that's used 
by the oscilloscope; a separate ohms 
scale, in blue, is used for resistance. 

Turning to the test leads, the built-in 



4^ 



mtlntnsh 

STEREO CATALOG 
and FM DIRECTORY 

Get all the nevyest and latest information on tfie new 
Mcintosh stereo equipment in the Mcintosti catalog. In 
addition you will receive an FM station directory that 
covers all of North America. 



O 
z 
O 
EC 



Q 

Q 

< 
IT 

42 




O 66 00 c 



,0 ■^—^-^ -ea 




Mcintosh Laboratory Inc, 
East Side Station P,0. Box 96 
Bingtiamton, N,Y. 13904-0096 

[^AME 



RE 



I 
I 

I ADDRESS 

I 



CITY. 



_STATE_ 



_ZIP. 



If you are in a hurry for your catalog please send the coupon to Mcintosh. 
For non rush service send the Reader Service Card to the magazine. 



CIRCLE 93 ON FREE INFORMATION CARD 



ones are used for voltage measurements. 
For current and resistance, separate leads 
(not provided) must be connected to the 
banana jacks on the side of the unit. 

Looking at the readout, rather than the 
small LCD or LED unit you might have 
expected, the display is generated by the 
1 .2 X 2-inch CRT itself. Among its fea- 
tures are an automatic polarity indicator 
and an overrange indicator. The position- 
ing of the deciinal point is determined by 
the range setting. 

Two manuals were provided with the 
unit we received for evaluation; both were 
excellent. The small operators' luanual 
provides all the information one needs to 
successfully use the instrument. It in- 
cludes such things as a rundown on the 
controls and functions, the unit's electric- 
al specifications, and suggested applica- 
tions for the device. The second one is a 
very complete service manual. It covers 
just about anything you might ever need 
to know about the unit. Included are com- 
plete electrical and mechanical diagrams 
including schematics and parts- 
placement diagrams, a parts list including 
both Tektronix' and the manufacturer's 
part numbers (where applicable), theory 
of operation, and full maintenance, 
calibration, and .service data. 

There is one thing about the instrument 
that we found a little disturbing. It was 
designed with the input-common refer- 
ence floating above ground. Because of 
that, the probe-common clip, the com- 
mon input-jack, the mA-ohm input jack, 
the external -trigger jack, and power-plug 
prongs may be at a dangerous potential. 
Specifically, when the unit is battery- 
operated, a voltage applied to the com- 
mon inputs could cause some current to 
flow through the power-line circuitry 
creating a potential shock hazard on the 
prongs. The danger of that is clearly spel- 
led out in the manual. To prevent shocks, 
it is strongly recommended that the 
power-cord plug be stored in the special 
compartment in the rear of the instru- 
ment. 

Despite the above hazard, we feel that 
this unit has a lot going for it, especially 
for the field technician. If the thought of 
replacing your scope and DMM with a 
unit that's barely larger than your DMM 
appeals to you, give this unh a look. It's 
suggested retail price is $2410. R-E 




'Now tell me how smart you are!' 



U. 



THE NEW 



Model 3500 has manual ranging 
or easy to use auto ranging . . . 




Wtriplett 



MODEL 3500 



AC/OC Range Zero 

LPS/fi Setect Adjust 



OHMS 
VOLTS — 20mA 



200mA 



|10A 



mA 
OOACV 

I 10000CV 



VftmA 



feV^°^ 



ACTUAL 
SIZE 



A custom CMOS integrated circuit provides 
additional state-of-tiie-art features such as: 



Readings to 2999 in all manual ranges and functions. 

Flashing "1" in illustration 

signifies a "2" for a 2234 

reading. This provides an 

addllionai digit of resolution. 

Flashing "1 " wtlh three zeros 

Indicates an over range. 



i D D U 

("1" Flashing) 



Relative reference, off set, measurement up to 99 
counts on all DMfUl functions, displays subsequent 
readings as a ± deviation from stored input. 

Autoranglng voltage and resistance ranges writh simple 
switching to manual ranging mode and 12 LCD display 
annunciators. mV, V, mA, A, ii, Kil, LPii, AUTO. BATT, 
ADJ, AC and negative (— ). 

Note these additional features: 

• basic dc accuracy 0.25%, 
e selectable audible continuity tone on all ohms ranges, 

• 1QA range, 

• overload protection to 1000 VDC, 750 VAC and 600 V on 
ohms and current ranges with .3A/250V and 2A/600V 
fuses arrangement, 

« only two tacks make all measurements, 

• five Hi Power and lour Low Power ohms ranges, 

• easy access to 2 AA batteries and fuses, 

• temperature probe accessory available. 
For a demonstration, contact your Triplett Distributor, Mod 
Center or Representative. 

Triplett Corporation, One Triplett Drive, Bluffton, OH 45817. 
(419) 358-5015, TWX (810) 490-2400. 




V\ 

\jjf ^ Triplett performance ... a tough act to follow 



'75^: 




TRIPLETT 



gRCLE 62 ON FREE INFORMATION CARD 



UJ 

6 
o 
< 



OUT FRONT 
DMM 



HICKOK'S LX-306 

PIED PIPER 

with exclusive Vari-Pitch 

. . ... darobtnes the best of DMM's, 

lafog meters, logic probes, 
' tracers and continuity testers into 
one compact unit. The LX-SOB 
offers 0.25% accuracy and alii \ 
functions and ranges featufect I 
otfie^ leading DMMs; PLUS, VARI- 
P TqH ithe audible DMM .tone 



.fP^CH 




cKly locating interrtiitterttsJ I 
iLo{:a0ng and testing capacboi 
in a circuit. 1 I 

' .Makipg ^naiog-type peaking and 



by 25% or mo 



jobs and busy schedules. Built to m 
your band and your budget! 

I LIST PRICE f!ISS,eiC 
LIMITED TIME OFFER $139.00 

See your Hickok distributor, or coniact 



HICKOK 



CE 

h- 

o 

UJ 



THE HICKOK ELECTRICAL INSTRUMENT CO. 

105)4 Qupont Avenue • Cleveland Dlio 44108 

(?16) 541-8060 -TWX 810-421-8286 



NEW PRODUCTS 



For more details use the free 
information card inside tlie back cover 



DIGITAL MULTIMETER, model LX-306, fea- 
tures the same Vari-Pitch audible tone that 
was introduced in Hickok's model MX-33,. It 
has 3'/2-digit capability and is accurate to 
within 0.25%. It includes full AC/DC voltage 
ranges up to 1000 volts DC, 750 volts AC 
(usable to 5 kHz), 10-ampere AC/DC current 
ranges, resistance ranges from 200 ohms to 
20 megohms, diode-test function, and 10- 
megotim impedance. 




CIRCLE 111 ON FREE INFORMATION CARD 

The unit's miniaturized fiand-held case de- 
sign allows ease of handling, conveniently fits 
into a tool kit, and ttie case is sturdy enough to 
pass a 4-foot drop test. The Vari-Pitch aud- 
ible tone varies in frequency proportionally to 
the signal input, and is usable on all ranges 
and functions. Response is instantaneous. 
Using Vari-Pitch, troubleshooting by char- 
acteristic or "signature" sound, saves time 
and effort in detecting ripple or noise on 
power-supply lines, locating intermittent 
problems, locating and testing capacitors. 
The user can make ana log -type peaking and 
nulling adjustments. 

The model LX-306 is priced at $139.00.— 
Hickok Electrical Instrument Company, 
10514 Dupont Ave., Cleveland, OH 44108. 

FUNCTION GENERATOR, model 528D, has 
a frequency range of 0.001 Hz to 20 MHz and 
produces sine, square, triangle, positive 
square, and negative square waveforms from 
the main generator. An auxiliary ramp is also 
available through the main output amplifiers, 
and is used to sweep the main generator in 
the SWEEP mode, A tjuilt-in frequency/period 
counter reads out the frequency/ period of the 
main generator, the frequency/period of the 
ramp (sweep) generator, and also serves as 
a frequency/period counter for external sig- 
nals from 1 Hz to 100' MHz and 1 mic- 
rosecond to 1000 seconds. 



44 CIRCLE 85 ON FREE INFORMATION CARD 




CIRCLE 112 ON FREE INFORMATION CARD 

In the sweep mode, the ramp generator is 
used to internally sweep the main generator 
either up or down linearly (up to 1000:1) or 
logarithmically (up to 100,000:1). The start 
and stop frequencies are independently set- 
table and either may be easily set and meas- 
ured using the hun/hold and trigger/hold 
positions of the famp-mode switch and the 
built-in frequency counter. The main gener- 
ator frequency can be manually swept linear- 
ly up to 3 decades, or logarithmically up to 5 
decades, using the start frequency dials. A 
VCF input allows the external control of fre- 
quency over a 5-decade range in the log 
mode and a 3-decade range in the linear 
mode. The frequency controls are dual 
(coarse and fine), providing excellent resolu- 
tion. 

As a pulse generator, the model 52SD uses 
the ramp generator to trigger the main gener- 
ator. Square pulses of either polarity, or sin- 
gle pulses of sinewave, triangle, haversine, 
or havertriangle waveforms can be selected. 

The model 528D is priced at $1495.— 
Exact Electronics, 2000 Arrowhead Dr., PO 
Box 1925, Carson City. NV 89701. 

SATELLITE-TV RECEIVER, model SC- 
7032, has a wide range of features to cover 
the requirements of the home satellite-TV 
reception system. Included are channel scan 
for convenient and quick review of available 
channels on each satellite; polarity-reverse 




CIRCLE 113 ON FREE INFORMATION CARD 

button; signal-strength meter for easy video 
fine-tuning control; audio tune; channel 
select, with LED readout; built-in satellite- 
selector control, with LED readout for op- 
tional actuator, and built-in polarotor that 
automatically changes polarization. In addi- 
tion, an optional channel -select remote con- 



Amazing new solid- 
state oscilloscope.. 

fits in the palm of your hand 



CRT oscilloscopes just became 

obsolete ' The revolutionary new solid-state digital 
LED Pocket-O-Scope does it all, in a 4 -ounce package you 
can put in your pocket. 

Easy to use. Ideal for the hobbyist or the technician. The 
Pocket-0-Scope is 100% solid-state, focus and brightness 
on the 210 point, high-intensity illuminated screen are elec- 
tronically self-controlled. The trace is always in sharp 
focus. Zero and sweep positions are maintained automati- 
cally. Zero-reference, or cross-over line is always centered 
for full trace minimum on the screen. Automatic internal 
circuitry always assures a properly positioned wave form. 
4 solid-state controls do it all. The only knobs on the 
Pocket-O-Scope are for positive and negative sensitivity 
and for coarse and fine synchronization of the frequency 
of the incoming signal. The easiest to use, full capability 
scope available! 

Years in development. The Pocket-O-Scope is the culmina- 
tion of years of development in high technology, micro- 
electronic components and digital design. 
Features: All solid-state, digital design • Hand-held or 
bench operation * High resolution 210 point, 1,5" square 
display • Battery or A/C operation with adapter • Factory 
cahbrated — never requires recalibration • Full function, 
single trace capability plus Vz channel dual trace and signal 

inverter • Full 
overload protec- 
tion to prevent 
damage to scope 
• Automatic 
zero voltage 
centering • 
Automatic free 
run or locked 
image • Auto- 
matic full hor- 
izontal sweep 
circuit ■ 
External 
input/output 
for add-on 
capability 
Specifications 
5 Megahertz 
bandwidth • 
Sensitivity — 
vertical, 
10MV» 
Accuracy 
± 3% on 
wave forms — 
sweep linearity ± 
5% • Time base 
— . 1 microseconds 
to .5 seconds 

CIRCLE 7 ON FREE 




• Vertical gain — to 120 volts • Continous free run to 
locked image response • Power supply 9VDC - dual polarity 
Controls: Single or dual trace • On-off, battery-A/C • 
Sensitivity; separate pos. & neg. controls • Sync C & Sync 
F controls 

Limited, 90-day warranty 

No risk introductory offer. The revolutionary Pocket-O- 
Scope is a development of Calvert Instruments, Inc., for 
25 years a manufacturer of electrical equipment. As an 
introductory offer for a limited time oiily, you can buy the 
Pocket-O-Scope including a carrying case, A/C adapter, 3 
standard "grabber" probes and 2 high voltage probes for 
only $249.95, a $321 value. If you act now, you will also 
receive FREE Calvert's 200-page Comprehensive Oscillo- 
scope Training Manual, a $15.95 value! 
Put your Pocket-O-Scope to the test for 
two weeks. And if you 
decide, for any 
reason, that the 
Pocket-O-Scope < 
is not for you, 
return it within 
the 14--day trial 
period for a prompt 
refund. The training 
manual will stiE be 
yours to keep. 

Maii this coupon today, or call toll-free* while 
the introductory offer is still in effect. 




19851 IngereoU Dr., Cleveland OH 44116 • 216-356-2155 

Please send mt: 

Pocket .O.Scope<s). including carrying case, A/C adapter, standard and high 

(Mnbcf} voUage prcjhcs, and FREE gaining manual, (Batieries not included) all Tor 

S249.95 plus $5 for postage and insurance. Ohio residenls add h.i^i sales ta:c. 
Pocket-O-Scope oniy with jtandard probs; S 179.95 pltis S5 po^ta^e. 

Ohio Residents add 6.5^ sales lajt. 
D My check is enclosed , 
D Please charge the credit card account checked below. (F'lll in all account number 

digitsoftheo/tecreditcatd you wishiouse.) RF-1 083 
D MasterCard DVisa 

DDDDDDDDnnnaDnanan 



Expiration 
Date 



Interbank 
Ko 





OtMOaCxia^fi 




Nlfiw >■ 




. 




(pt-.^ print 


Am. 


rity 


Stale 




Zip 



*CALL TO I.L.I- RLE S(K)-835-2246 EXT. 1 18 to order by phone, request 
further information or to inquire about becoming a distributor. 
In Kansas, call SO0-362-242I Est, 118. Allow 6-8 weeks for delivery. 

INFORMATION CARD 



. t 






CO 

o 

z 
o 

EC 

»- 
o 

6 

s 



Digital 
Features. 




Analog 
Prices. 



Now you can get all the 
measurement capabilitv 
you've been looking for 
In a digital multimeter 
for the price of an analog. 

Priced as low as $59.95, the 
Circuitmate™ Series dm Ms 
from Beckman offer a superior 
combination of standard 
features including: 

• DC + AC volts 

• DC + AC Amps 

• Resistance 

• Diode Tfest 

• 0,8% or 0.5% DC Accuracy 
(depending on model) 

• Single Rotary Selection 
Switch 

Depending on the model you 
choose— you can enjoy the 
added capability and conven- 
ience of 10 Amps AC + DC, 
audible continuity checking, 
hFE testing, capacitance and 
conductance capability. 

Get your hands on a 
Circuitmate™ DMM today 
For the dealer nearest you, 
write or call 

Beckman instruments, inc.. 
Instrumentation Products, 
2500 Harbor Blvd., 
Fuilerton, CA 92634, 
(714) 993-8803. 



BECKMAIM 

CIRCLE 41 ON FREE INFORMATION CARD 



trol with fine-tune button and up/down trans- 
ponder switch is available. 

Input frequency of the model SC-7082 is 
70MHz at 72 ohms impedance. The video 
output tevel is 1 volt peak-to-peak nominal at 
27MHz with 20Hz to 4.2MHz frequency re- 
sponse. Audio output is variable 5.5 to 8.0 
MHz, selectable from the front panel. Fre- 
quency response is 50Hz to 15kHz. Harmon- 
ic distortion is less than 2% maximum THD, 
Power is 115 volts AC, 50/60Hz, 

A single-conversion downconverter with IF 
output of 70MHz mounts at the antenna, with 
72-ohm output for coaxial cable to the receiv- 
er. A channel % crystal -controled modulator 
is built into the receiver. 

The model SC-7032]s priced at $965.00— 
Winegard Company, 3000 Kirkwood Street, 
Burlington, ID 52601. 

STEREO PHASER, model VC-1, easily con- 
nects most TV sets, and all video recorders to 
your stereo unit. It improves ordinary TV 
sound in three ways. 



2: Synthesized stereo sound: The model 
VC-I taltes the video mono signal, processes 
it, and creates a stereo effect. 

3: Noise/hiss elimination: A simple four- 
step control dial on the model VC-1 effective- 
ly blocks out garbage noise and hiss, and 
allows you to adjust the noise reduction for 
any video source: TV program, cable, 
videotape deck, or videogame. 

The model VC- 1 is priced at $1 99,00,— RG 
Dynamics, Ire, 6440 North Ridgeway Ave., 
Lincolnwood, IL 60645, 

LOW-DISTORTION OSCILLATOR, model 
4500 ranges from 1 Hz to 1 0OkHz, It gener- 
ates a sinewave with less than ,001% 
{- lOOdB) distortion, and squarewaves with 





CIRCLE 114 ON FREE INFORMATION CARD 

1 : Dynamic range expansion: the model 
VC-l's dynamic range-expansion process 
restores and delivers the depth, and clanty of 
the original production sound. 



CIRCLE 115 ON FREE INFORMATION CARD 

aberrations of less than 5% peak-to- peak 
amplitude. Five pushbuttons of decade multi- 
plication with an infinite-resolution, single- 
turn dial calibrated in Hz from 1 to 10 provides 
continuous frequency coverage. Also, a ver- 
nier dial that covers ± 5% of the frequency 
range is provided for intricate adjustments. 
The model 4500 delivers up to 7 volts RMS 
open circuit to main and inverted outputs of 



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CIRCLE 94 ON FREE INFORMATION CARD 



46 



high stability 
• prompt service 
V» cost savings 



General Communicarkxi 

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CIRCLE 28 ON FREE INFORMATION CARD 




MONEY SAVING SALES SPECIALS 



TELEPHONES 



XORDLESS TELEPHONE- CLCXJK RADIO 

■ I ^V ea. MODEL RP-7405 

• For insitte or outside your tause (up so 100 1L 

• AulcfUBlically reAsIS Idsl te^hone nuiriber edited 

• Mute bulton 1^ privacy. 
AM-FM ELECTRONIC DIGITAL CLOCK 
RADIO FEATURE: • Large LED lime diSDlay 

• Hi- Lo rJIrruiier swilc^ • Snooze alarm • Watnut 
slyling • Slide rule dial indicata 



PORTABLE CORDLESS 
EXTENSION TELEPHONE 

• E>:clu&ive clear call selector altows gptkmine voice 
clariny wilhin operalkifl ran^ 

MODEL CP205S 

• Portable hand^t allows you to piace tn answer 
calls up to 600 feel from base unit , . . inside of 
cu^stde. 



CORDLESS TELEPHONE 

88°° „ 

MODEL CP-noS 

• Mule bullori on handsel allows you Id talk lo 
someone in room wilNlul party on lirK UstEninti lo 
corrversation Remote Rechafs^ability * ^orks up to 
600' leel Irom tiase unil. 



CORDLESS SPEAKERPHONE 



149 



95 



MODEL CP-1305 

• Spcaterphone rs buill into base unit Allows 
eotire lamily lo SP^k and l£ten wittiaul 
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CIRCLE 40 ON FREE INFORMATION CARD 




2 NEW 
OPTO 

^ DESIGN 
V KITS! 



Nfl* you can 
have 36 different 
OtilrOnS Tor easy LED 
design ftght a( your linger dps' 



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CIRCLE 31 ON FREE INFORMATION CARD 



600-ohm impedance. A main output of 50- 
otim impedance is also provided. Ex- 
ceptionally flat response. {,05d8) virtually 
eliminates ttie need to constantly monitor out- 
put voltage levels. A four-position pusiibutton 
attenuator, calibrated in 20-dB steps, 
togetlier with a 30dB vernier, provides a total 
dynamic range of 90dB. Amplitude and fre- 
quency stability varies less than .001 % witti a 
10% change in line voltage. 

A rear-panel sw/itch selects chassis or 
floating ground. The oscillator uses only 6 
watts and operates on sv\fitcii-s electable line 
voltages of 90-132 or 180-264 volts, 60- 
60Hz. An optional 19-inch Rack Mount Kit is 
available. The model 4500 is priced at 
$675.00. — Krohn-Hlte Corporation, Avon 
Industrial Park, Avon, MA 02322. 

DIGITAL THERMOMETERS, mode! 565, 
model 866, model 868 (shown), and model 
869 (shown) have thermistor or RTD (Resist- 
ance Temperature Detector) sensors and 
offer increased accuracy over thermocouple 




CIRCLE 116 ON FREE INFORMATION CARD 

















meters; they have O.r sensitivity. 

Model 865 (T) and model 866 ("C) are 
thermistor thermometers, designed for ap- 
plications in electronics, life sciences, food 
processing, and heating and ventilating. 

Model 868 {'F) and model 869 (°C), with 
platinum RTD sensors, offer accuracy equiv- 
alent to thermistors over a wide range. The 
RTD models are designed to meet the 
accuracy and long-term stability require- 
ments of critical laboratory applications. 

The thermometers are priced as follows: 
Model 365 and model 666 are $139.00 each; 
model 868 and model 869 are $249.00 each. 
— Keithley Instruments, Inc., 28775 Aurora 
Road, Cleveland, OH 44139. 

HEATING TOOL, the Glo-Ring Infra-Red 
Heat Tool, Is a hand model with half-inch- 
diameter elements designed specifically for 
shrinking heat-shrinkable tubing on small 
work pieces In the electrical and electronics 
industry. It uses quartz-glass heating ele- 
ments that open and close like a thumb and 
forefinger to encircle the work piece with In- 
stant radiant heat at a temperature of 1 000°F. 
Glo-Rings provide an alternative to using 
the traditional heat gun. Cost savings are 
realized by reducing production time and 
electrical power consumed. Safety hazards 
are eliminated because no uncontrollable 
blowing hot air is generated. 




CIRCLE 117 ON FREE INFORMATION CARD 



The prime application for the device is for 
shrinking heat-shrink sleeving in the electri- 
cal and electronics industries. However, it is 
also useful for sweating solder sleeving, 
bending PVC pipes, and drying out com- 
pressed-air lines. In addition to half-inch ele- 
ments, plug-in two-Inch, three-Inch, and four- 
inch elements are available. 

The Glo-Ring tnfra-Red Heat Too/ is priced 
at $1 97.00 — Ttie Eraser Company, PO Box 
4961/Oliva Drive, Syracuse, NY 13221, 

TELEVISION SYSTEM, the VideoScope 
model RVP-460, is a rear-screen projection 
system; the 46-inch screen provides three 
times the viewing area of an average 26-inch 
console, yet requires no additional floor 
space. That is due to an exclusive optics 
system, which folds the projected image path 
to fit into a substantially smaller cabinet than 
those used in conventional systems. 



CIRCLE 51 ON FREE INFORMATION CARD 



State-of-the-Art 



4»i=(»i 



Quality • Low Prices • Immediate Delivery 



^fieoiAL( 




MODEL V-1880 



BP STAB 1 LI ZEFVl MAGE ENHANCEFV 
RF CONVERTER/VIDEO FADEfV2-WAY 
DISTRIBUTION AMPLIFIER 



119< 



OUR PRICE 

Coniains (iue units in one; stabilizer (video guard 
remwer); image enhancer; video to RF converter 
video lader; and dual ouipui disiribulion amplifier. 
Stabilizer Wiii correct entire range of copy guard 
distortion sucti as jitter, vertical roli or biack bar 
travelling through picture. 
Enhancer Attain besl picture for your preference. 
RF Converter Allows your TV set to receive video and 
audio signals Irom your image enhancer, guard 
stabilizer, video camera, computer, VCR, etc. The direct 
video signal from any video componeni can be (ed 
into the V-1880 and converted to a usable RF signal 
that can go to your TV antenna terminals. 
Video Fader IJsed to produce fade ins and outs 



tie^t 




MODEL V-2 250 



BP TV TO STEREO 
AUDIO ADAPTOR/ 
ENHANCER ^^vgs 

OUR PRICE I M 
Easily connects to any TV and 
Stereo Amplifier or simulated 
stereo sound. Mattes taping TV 
Audio simple - TV can be located 
any distance from stereo. Delivers 
two channels ol simulated stereo. 
With noise eliminator and special 
output level controls. Frequency 
response: 50 Hz - 15,00 KHz. 



tH^' 



I BP VIDEO COLOR PROCESSOR/RF CONVERTER/ 
STABILIZER/3-VI/AY DISTRIBUTION AMPLIFIER 



OUR PRICE 



189< 




MODEL V-1 890 



Corrects video signal 

directly into tape not 

just on playback. 

Luminance meter 

monitors brightness 

levels for quality 

recordings. Can also 

be used betviieen video cameras and VCR, VCR and VCR and from VCR 

to TV during playback mode. Corrects off-color tapes. Center detent. 

luminance, chroma, phase and audio controls. Stabilizer for removing 

copyguard. 



BP VIDEO GUARD STABILIZER 

MODEL 
V.1875 




^ 5^=00 

OUR PRICE "tW 

Has self coniamed A&B and bypass swiich Many 
rTKJvies. concerts and special programs for sale or 
renlai are copy guarded. Tliis removes copy guard 
and allows you lo make copies, t^^any TV sets will 
nol play preiecoreled tapes because copy guard 
causes picture to roll and litter, turn lo snow or 
disappear Video Guard Statntuer (emo>/es copy 
guard from signal 

BP RF CONVEHTTER/MODULATOR 

MODEL V-1885 

OUR PRICE V9 
AHows your TV 
\Q receive video 
arid aixlio signals 
trom image erv 
hancer, guard 
siabilizer. video 
camera, compiler. VCR. etc. 
The oulpLtEs of many video 
componenis cannol be cfFrecily hooked up to the 
VHF antenna terminaEs on i^ur TV se!. This 
problem IS solved Dy using ihe Model V-1885 RF 
Convertei". Converts video signal from any video 
componeni lo adjustabJe RF signal at antenna 
tenriinals. Allows your VCR outpui lo feed iwo TV 
sets at Ihe same lime, with virtually no signal loss 




BP VIDEO SELECTOR CENTER 

MODEL V-4S03 $ A A95 

OUR PRICE *»«^ 

A switcher that can 
accept 6 inputs and 
direcl them to 3 out- 
puts. Utilizes switch 
similar to one used on 
tiome VCR's. Von avoid 
signal loss incurred by 
using splitters. 



OUR PRICE *Ti9 



PHI LI PS/MAG NAVOX 

REMOTE TV CONVERTER 
MODEL CTC9R $4 9R00 

OUR PRICE 1^9 

60 Ctranne] 

selection. Infrared 

liansmitlBr system for 

impedance free 

operation. On/Olf, 

change channels. 

line lure. Program- 

mabie 12 hour cloctt with Auto and PM indication. 

Channel memory and recall. 

BP UHF CABLE CONVERTER 
WITH FINE TUNING/46 CHANNEL 

MODEL V-5746 




OUR PRICE 



$249® 



Fully shielded 
oscitlalor eliminates 
fierring txme distortion. 
For BelaA/HS 
recording. Record & 
use TVs rempte 
control. Complete 
programming ol VTR. 




BP VIDEO GUARD STABILIZER/ 
RF CONVERTER 

MODEL 
V-1 877 




$An85 

OUR PRICE SM9 

Same as V-1875 But with a built-in RF Convener 
Ihal gives the model V-1 877 an RF ouipui which 
can be led directly lo Ihe anienna terminals of a TV 
set. This enables you to remove Ihe copiy guard 
Irom a pre-recorded tape and view it on a TV using 
only a VCR. 

Use as an RF Converter only. Dsed in conjunc- 
tion wuh youf TV, you can leed direct audio and 
video signals from any video device such as video 
camera, compuier. portable VCR, etc. 

BP IMAGE ENHANCER 
MODEL v-iseo 

Dramatically improves 

performance 

ol video 

cameras 

and VCRs 

joff-lhe-aii 

or second 

generation 

recordings) 

by compensa' 

ting for deleriora- 

tion of detail and 

sharpness. tncEudes video distribution amplifier 

with two video outputs. 




OUR PRICE 



$gg95 



■ M«itttChir<a« 

■ VISA ■ COD 

I m Hor^av 0F4*r 
ICIiack 



N.lf. State 
maivB lax. 



260 Motor Parkway, Hauppauge. N. Y. 11 768 



C0D'« victri (i^Rqutrnd 25% dapoKil) 



ADD FOR SHIPPtNG AND INSURANCE 
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TOLL (800)645^18 

rntX. ;„ N.y. state call 800-832-1446 



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50 



Vital protection 
for PC Boards 




Be safe. Desolder PC components 
with Endeco irons. Get proper HEAT 
TO MELT and strong VACUUM 
ACTION TO LIFT solder and cool 
both PC board and component 
without damage 

These PC components replaced fast 
with Endeco desoldering or solder- 
ing tools. 

i|#llf I ft 

Endeco professional features include 
safety light that denotes high, tow 
and off on switch models. SS con- 
strucrfon for long life, light weight 
'and balance for easy use. 

Contact your distributor for Endeco 
desoldering and soldering irons, kits 
and equipment — or write us today. 

Enterprise Development Corp. 

5127 East 65lh Street 
Indianapolis. IN 46220 
Phone: (317) 2S1-1231 



ORGLE 15 ON FREE INFORMATION CARD 



CABLE TV 

Buy Direct & Save 



SUPER SPECIALS 




40 CHANNEL 
CONVERTER 
529*5 



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Advanced Solid State design and cir- 
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36 CHANNEL 
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S699S 

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THE ULTIMATE CABLE TV 

CONVERTER 

60 CHANNEL 
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CONTROL 

S-12995 

Send $5 for Complete Catalog 



DIRECT VI DEO SALES 

P.O. BOX 1329 

JEFFERSOrtVILLE, INDIANA 47130 

CALL 

1.B12-282-4766 



CIRCLE S3 ON FREE INFORMATION CARD 




The convertible screen directs the bright- 
est optical path to the viewer's eye level, and 
can be adjusted easily for either seated or 
standing positions, it is cylindricatly curved to 
reduce room light reflections, and uses a 
special dye to minimize the effects of ambient 
tight. 




CIRCLE 118 ON FREE INFORMATION CARD 

The model RVP-460's high-resolution, 
high-contrast picture makes the set es- 
pecially useful as a computer data-display 
unit. That application is further enhanced by 
an RGB input circuit that provides a display of 
80-characters (color) by 25 lines. Use of a 
comb filter improves picture quality even 
further. The resolution is more than 500 lines 
(RGB), 450 lines (video), and 340 lines (RF). 



Versatile Lab 
Power Supply 







• 0-30 VDC at D-2A • ExfiBflBnt Regulation 

• Ripple & Noise - SDO uV • Built-in Stiort- 
Circuit and Overload Protection 

Model 3DDZA features continuousty 
adjustable current limiting and precision 
constant voltage/ constant current operation 
with "automatic crossover." Tliis lab^grede 
unit can also be used as a current regulated 
power saurce. 

Optional tO-turn voltage & current controls: 
$25 eacii. Add $3.00 for UPS stiipptng In 
Continental U.S. Ctieck, Money Order or 
C.O.D. accepted. Illinois residents add S% 

sales tax. 

■ - ■ ELECTRO INDUSTRIES, INC, 
4201 W. IRVING PK., CHICAGO, IL60S41 
3ia/736-09B8 



The model RVP-460 Is priced at $4400.00 
— Sony Corporation o( America, 9 West 
57th Street, New York, NY 10019. 

PHONE-RINGER KIT, model GT-1218. is 
designed to replace the sometimes un- 
pleasant ring of a conventional telephone 
bell ; in its place, it will play one of four tunes or 
tones that the user can select or change at 
any time. 

The pre-programmed integrated circuit in 
this one-evening \f.\\ is a true polyphonic syn- 
thesizer and alerts the owner of phone calls 
in one of four ways: a beeping signal, an up- 
beat four-note chime, ten seconds of Bee- 
thoven's "Fur Elise," or 20 seconds of "Ro- 
mance" by Rubenstein. 

A pushbutton switch lets the user choose 
either the standard telephone bell, or one of 
the pleasant signals from the Phone Ringer, 
which are selected by jumping a small wire to 
separate sockets on the internal circuit board. 




CIRCLE 119 ON FREE INFORMATION CARD 



Housed in a beige snap-together case (5 % 
X 4 % X 1 '/, inches) with an internal speak- 
er, the phone hnger includes two connector 
leads for remote speakers, a variable volume 
control, modular phone plug with six feet of 
cable, and keyhole slots in the caseback to 
facilitate wall mounting. It installs between 
any modular telephone unit and a modular 
telephone set (except wall-mount set). It is 
powered up to a year by two 'C cell alkaline 
batteries, and is approved by the FCC for 
direct-line connection. 

The Pleasant Phone Ringer, model GT- 
1218, is priced at $29.95. — Heath Com- 
pany, Benton Harbor, 1^1 49022. 

MOTION DETECTOR, the Micro Motion 
Sensor, is designed for automotive security 
applications, and is easy to mount anywhere 
under the hood or fender. It is made of glass- 
filled virgin nylon, and is completely sealed to 




CIRCLE no ON FREE INFORMATION CARD 

eliminate the false alarms common to older 
type motion detectors during damp or rainy 
weather. The Mcro Mo/ran Sensor is 3 x 1 % 
X 1 inches and can be used in any system 
that employs motion detection. It is priced at 
$9.95 — Thug Bug Corporation, 1999 
Johns Drive, Glenview, IL 60025. R-E 



CIRCLE 26 ON FREE INFORMATION CARD 



Two facts you'll find hard to believe . . . 

l.This phone, with engineering for 
the year 2001. is yours right now 
2. Your cost is only $99.95. 



Some of the brightest electronic 
engineers in the world decided to build 
a telephone that makes all others 
obsolete. 

This phone would have a big 
memory to remember (and dial with one 
or two buttons) a lot of phone numbers. 

It would handle one or two lines, 
with a "hold" button, for big-phone 
performance and convenience. 

It would work with rotary pulse or 
Touchtone®, so you can use it to taik to 
a computer or to use MCI, Sprint, or 
any of the tone-code long distance 
services. 

It would display the number being 
dialed in LED-illuminated figures, to 
prevent errors even in the dark. 

Most of all — 

It would be beautiful, a magnificent 
sleek instrument to enhance any room. 

Ladies and gentlemen, we give you.- 

The Electronic Secretary-Phone 

Every other state-of-the-art phone 
we've seen handles either just one line 
or (bulkity) five lines. 

The ELECTRONIC SECRETARY- 
PHONE is about half the size of most 
phones, but its innards are crammed 
with advanced electronic technology. 

What a timesaver! It "remembers" 
up to 32 numbers! Enter them just once 
— then call any of them by pushing one 
or two buttons. 

Two-ln-Ono, with "Hold" Button 

You control two separate phone 
lines, which means you can have a true 
multi-line conference call without 
involving the phone company. 

Talk on Line 1; or put the call on 
Line 1 on hold white you talk on Line 2; 
or He both lines together by defiressing 
both buttons! 

Best of all, you can touch one key 
and you'll have a hands-free 
speakerphone whose sound fidelity is 
surprising. Your phone has a volume 
control, of course. 

Before we tell you how little It costs, 
here a few more timesavers and 
conveniences built into your Electronic 
Secretary-Phone; 

Elegant, Expensive-Looking, Easy I 

We've seen phones you need an 
engineer's degree to operate. A child 
will have no trouble putting this wonder- 
phone through its paces. 

You won't dial a wrong number 
because an LED display shows you, 
digitally, the number you're calling. 

You can call MCI, Sprint, your 
computer, or anywhere you need the 
touchtone signal. A touch of your finger 
switches back and forth from oulse to 
touchtone. 

Automatic redialling of the last 
number? Of course. No jangling ringer- 
tjell; the ringer is a pleasant electronic 
tone. 

But we think what you'll like most 
about the Electronic Secretary- Phone is 
its beauty. If ever a phone could win an 
award for design, this is i1. You'll be 
proud to have this phone in your home 
or office. 





LED Display Shows No. Being Dialed. 



Gfff It Far Below Market Place 

We originally planned to sell this 

Chone for $169.95, and it would be a 
argain at that price. When we decided 
to feature it in our catalog, we lowered 
the price to $129,95. 

Now we've been able to contract for 
enough of them that you can own an 
Electronic Secretary-Phone tor only 
$99.95! At that price, while we have 
them, you should order two. 

Our absolute guarantee means 
you'll have a month to use this phone 
and see for yourself that our claims 
about it are true. Enjoy it! 



WE ABSOLUTELY GUARANTEE! 

Plug in the ELECTRONIC SECRETARY- 
PHONE. Use it for up to 30 days, if you 
decide for any reason you don t want to 
keep it, return it for a 100% refund. J 



• Handles TWO Phone Lines 

Use the "Hold" button to switch back 
and forth, Or use them together for 
conference calls! 

• Conference Call Feature 

Just push both buttons and both lines 
are open. They're interactive, so you 
can tie two calls together! 

• Speaker Phone 

If you have a roomful of people, or if 
you just don't want to hold the 
instrument, your Speakerphone has 
wonderful sound fidelity plus volume 
adjustment! 

• 32 Memories 

Your phone "remembers" up to 32 
numbers. Enter them just once, then 
dial by pushing one or two buttons. 
Even remembers long strings of 
numbers like MCI! 



$99.95 complete 
SAVE $20.00! Two for $179.90 
(+ $2.50 per total order for shipping) 

Order TOLL-FREE 

For fast delivery on credit card orders 

call toll-free 24 hours a day, 7 day s a week: 

800-443-01 00 

Ask for Ext. 1 11 

Or send check or money order. 
Please add indicated shipping cost. 



newHORizoiis 



Dept.R10 5-31 50th Avenue 
Long Island City, N.Y. 11101 



O 

□0 

m 
3 



51 



At CIE,you get electronics 
career training from specialists. 



3 

I 

6 



S2 




If you're interested in learning how to fix air conditioning, 
service cars or install heating systems— talk to some other 
school. But if you're serious aliout electronics... even earning an 
Associate Degree... come to CIE —The Electronics Specialists. 



Why trust your education 
and career future to any- 
thing less than a specialist? 

You shouldn't. And you 
certainly don't have to. 

If you talked to some of our 
graduates, chances are you'd find 
a lot of them shopped around 
for their training. They pretty 
much knew what was available. 
And they picked CIE as 
number one. 

Be sure to shop around. 
Because, frankly, CIE isn't for 
everyone. 

There are other options for the 
hobbyist If you're the ambitious 
type— with serious career goals in 
electronics— take a close look at 
what we've planned for you at CIE. 
What you should look 
for first 

Part of what makes electronics 
so interesting is if s based on 
scientific discoveries— on ideas! 
So the first thing to look for is a 
program that starts with ideas 
and builds on them! 

Thaf s what happens with ClE's 
Auto-Programmed®Lessons. 
Each lesson takes one or two prin- 
ciples and helps you master them 
—before you start using them! 
How practical is the 
training? 

This is the next big important 
question. After all, your career 
will be built on what you can do— 
and on how well you do it 

Here are ways some of ClE's 
career courses help you get your 
"hands-on" training... 
With ClE's Personal 
Training Laboratory... 
you learn and review the basics- 
perform dozens of experiments. 
Plus, you use a 3-in-l precision 
Multimeter to learn testing, 
checking, analyzing! 
When you get your own 
5MHz, solid-state 
oscilloscope, you take some 
real professional steps. You use 
it as a doctor uses an X-ray 
machine— to "read" waveform 
patterns.. .lock them in...study, 
understand and interpret them! 
When you get your Digital 
Learning Laboratory, you'll 



be into digital theory— essential 
training today for anyone who 
wants to keep pace with the state 
of the art of electronics. With 
ClE's Digital Lab, you'll be 
applying in dozens of fascinating 
ways the theory you've learned. 
For example, you'll compare 
analog and digital devices. You'll 
learn to make binary to decimal 
conversions and to work with 
semiconductor devices and 
circuits. You'll see how digital 
equipment is vital to today's 
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Cleveland Institute of Electronics, Inc. 

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NEW IDEAS 



Remote telephone ringer 



Have you ever missed an important 
telephone call because you were in your 
basement or garage and didn't hear the 
phone ring? Or perhaps you heard it ring, 
but you heard it too late and, although you 
rushed as fast as you could, you couldn't 
get to the phone in time. And, even if the 
call is not important, missing it by a few 
seconds can be, to say the least, annoy- 
ing. 

Of course one solution to the problem 
is to stay near the phone when you are 
expecting a call. (Unfortunately, that 
doesn't work if you get an important call 
when you 're not expecting it. ) Yet there is 
another solution — the remote telephone 
ringer ihal we'll discuss here. 

The ringer that we'll describe solves 
the problem of incompatibility between 
telephone equipment and a conventional 
AC alarm bell or llO-voli electric light 
outlet. 



To PKowE. Likje.5 

A 



wire it into the phone itself. If you decide 
to do that, all you have to wire it in para- 
llel with the phone's bell. The circuit is 
centered around the two neon bulbs, NEl 
and NE2. Those bulbs will light when 
more than 100 volts is across the ringing 
circuit. The bulbs also provide line isola- 
tion between the unit and the telephone 
line. Finally, they act as a voltage divider 
for the bridge rectifier made up of 
D1-D4. That creates a positive voltage 
that is then applied through D5, is filtered 
by R2, R3 and C2, and causes Q I and Q2 
to conduct. When that happens, triac TRl 
is fired through the optical coupler ICl . 
Using the optical coupler assures that the 
load is isolated from the telephone lines — 
an important consideration. 

None of the parts used in the circuit are 
very critical and any wiring method can 
be used. And many of them, including the 
triac, optical coupler, neon bulbs, and 




RG. 1 



Why do I mention the electric light 
outlet? Well, for the hearing impaired, a 
light is an excellent way to signal a tele- 
phone call. It might also be a good idea, 
say, in a workshop. It's easier to see a 
light than to hear a bell when you're run- 
ning a power tool. 

To hook up the circuit (its schematic is 
shown in Fig. I), you can wire it to an 
existing junction box. An alternative is to 



VR 1 transient protector can be found at 
Radio Shack. The voltage of the 
transformer's secondary can be anywhere 
between 10 and 26 volts. 

Before we go, we should make one 
fmal note: It is advisable to check with 
your local telephone company to make 
sure that you follow the area's rules and 
regulations regarding the use of such an 
extension ringer. — Craig K. Sellen 



NEW IDEAS 

■Riis column is devoted to new ideas, cir- 
cuits, device applications, construction tech- 
niques, helpful hints, etc. 

All published entries, upon putilicatton, will 
earn $25. In addition, Panavise will donate 
their model 333~-The Rapid Assembly Circuit 
Board Holder, having a retail price of $39.95, It 
features an eight-position rotating adjust- 
ment, indexing at 45-degree increments, and 
six positive lock positions in the vertical plane, 
giving you a full ten-irx^ freight adjustment for 
comfortable working. 




I agree to the above terms, and grant 
Radlo-Electronles Magazine the right to 
publish my idea arKi to subsequently repub- 
lish my idea in collections or compilations of 
reprints of similar articles. I declare thai the 
attached idea is my own original material and 
that its publication does not violate any other 
copyright. I also declare that this material has 
not been previously published. 



TtUeof Idea 



Signature 



Print Name 



Date 



Street 



City State Zp 

Mail your id«a aJortg with this coupon 
to: New Ideas Rsdio-Electronlcs, 
200 Park Ave. Souttv, 
New York, NY 10003 



56 



MAKE YOUR STEREO SOUND SUPER 

FOR ONLY $4M 

THE SOUND RIVALS THE MOST EXPENSIVE SPEAKERS 



trS A GREAT DEAL 
BUT THERE'S A CATCH 

Only $4.50? It's true, Sound that 
rivals the most expensive speak- 
ers? That's also true. But there is a 
catch to this deal. Not number 22. 
Actually, our first. Read on. 

We're a new company. We need 
customers. So we're offering this 
special deal, on a very special prod- 
uct. The headphones are very new 
on the market. You'll see similar 
models just beginning to appear in 
hifi stores bearing respected names 
like Sony and Toshiba. 

Actually they're miniature ver- 
sions of the famous new technology 
headphones that wrap around your 
head with a steel band. The mylar 
diaphragms are exactly the same. 
So the tight crisp response is 
unbelievable, over the entire 
20-20,000 Hz frequency 
range. And as you probably 
know mylar domes simply 
don't work with normal 
speaker magnets. So the 
miniatures have the same 
powerful rare earth Samarium 
magnets as the ones you've 
seen. 

But here's where the similarities 
end. There is no steel band to fit 
around your head and press against 
your ears. They simply slip into your 
ears. That makes them more com- 
fortable, but what's more important 
something really amazing happens 
to the sound. You're closer to the 
music, it almost seems to envelope 
you. The sound truly is all encom- 
passing. If you ever try the older 
style headpfiones again, you'll think 
you're missing half the sound you've 



come to expect. You get these re- 
markable little speakers with a 
standard phone plug adaptor plus 
an extra set of foam covers. 

Now you're saying you never 
bought a Walkman. Glad you 
thought of that. Because we also 
have this neat little radio. Take 
seven normal filter cigarettes. Line 
'em up in a row. That's the size of it. 
Really, it's that small. Plus it comes 
with its own headphone set, and it's 
powered for up to 24 hours straight 
by two normal AAA batteries. Get 
the Ff^ stereo version for $22.50 or 
the slightly larger AM/FM model for 
$27.50. Both include headphones 
exactly like the ones we've de- 
scribed. 



Now if you like that idea, you don't 
mind the catch. Painless and easy, 
here it is: Try the radio and we'll 
throw in the extra headphones, 
adaptor and foam covers for only 
$4.50 more. 

So why do we do it? We're losing 
our shirts on the earphone, but we 
need to build our sales, and find 
people who like neat deals on neat 
electronics. We're a brand new divi- 
sion of a very large electronics com- 
pany. And we want to show those 
guys at headquarters what we can 
do. The best way is very special 
deals like this. So you benefit. 

To try this deaf with your credit 
card call the RCD toll free hotline or 
send your check plus $2.00 postage 
and handling. Specify group 1900 
on FIVI or AI\4/Ff^ on the radio. If you 
aren't 100% satisfied return it in the 
original carton within 25 days for a 
courteous refund. No hassles, no 
problems. 

Be prepared to get an explosion 
of sound, at home or anywhere you 
go. 




HOBBYCORNER 



A new contest 

EARL "DOC" SAVAGE, HOBBY EDITOR 



FOR SOME REASON THERE HAS BEEN AN 

increase in the number of inquiries about 
an unusual clock readout that was de- 
scribed here several years ago (March, 
1980). Since that time, all kinds of new 
IC's have appeared and there are more 
modem ways to achieve the same result. 
Let's see who can come up with the best 
new circuit. To be fair to those of you who 
may not have been around back then and/ 
or who do not have ready access to back 
issues, I'll run through the description. 

Bob Hankinson (PA) built a readout 
that consisted of a single vertical column 
of LED's. They were turned on and off in 
such a way that you could read the digits 
by "sweeping" your eyes across the col- 
umn. (Think of a "Times Square" 
billboard — except your eyes, not the 
numbers, scroll.) If you looked at it 
straight on, it looked just like a line of 
LED's. Here are a few hints that should 
help you to understand the problem bet- 
ter. 

Imagine a block as shown in Fig. 1 
consisting of just 15 LED's. (The filied-in 
circles are lighted.) By lighting selected 
LED's, you can show any digit. (For ex- 
ample, in Fig, 1 , the numeral 4 is shown.) 
With four blocks, you could show the 
time in hours and minutes. That's how 
many early digital clocks were made. 

For clarity, I'll confine the discussion 
to one digit/block. Looking again at Fig. 



AN INVITATION 

To better meet your needs, "Hobby 
Corner" has undergone a change in 
direction. It has been changed to a 
question-and-answer form. You are 
invited to send us questions about 
general electronics and its appiica- 
tions.We'lldowhatwecantocomeup 
with an answer or, at least, suggest 
where you might find one. 

If you need a basic circuit for some 
purpose, or want to know how or why 
one works, let us know. We'll print 
those of greatest interest here in 
"Hobby Comer." Please keep in mind 
that we cannot become a circuit- 
design service for esoteric applica- 
tions; circuits must be as general and 
as simple as possible. Please address 
your correspondence to: 

Hobby Comer 

Radlo-Electrorilcs 

200 Park Ave. Soutti 

New York, NY 10003, 



58 




FIG. 1 



1, you will see that the ' '4' ' (m this case) is 
made of 3 vertical columns. Of course, in 
the normal readout all three columns are 
lighted properly at the same time. 

Now take just one column of 5 LED's 
and light it sequentially according to the 
pattern of column a and then b and then c. 
If you get a match between the sequential 
rate and the speed of your eyes sweeping 
horizontally across the column, you can 
actually see the digh 4. It's really quite 
fascinating. 

Of course, once you get it working for 
one digh, all you have Jo do is add three 
more into the pattern and add blank 
spaces between digits. Then drive the 
whole thing with a clock IC and your 
family and guests will go bananas until 
they get the hang of reading it. 

Now for the contest: See what you can 
build and send me the circuit. (Show the 
entire clock circuit or at least back to the 
commonly available signal lines.) Keep it 
as simple and as inexpensive as possible 
(and make the diagram legible, of 
coiu'se). 

You have until the end of the October. 
That should give you plenty of time. 
Meanwhile, I'll see what I can do about 
finding some kind of prize for the best 
circuit. 

An old puzzle 

Some of you missed the point of the 
3 -house/ 3 -utility problem back in March. 
Recall that I said I had "whiled away 
many pleasant hours" on it back in junior 
high school. That, of course, was before I 
had learned enough math to prove that the 
problem has no solution — it just can't be 
done. 

1 do hope those who have been working 



Ed 



FIG. 2 



on it and requesting a solution have had as 
much fun with it as I once did! If not, 
perhaps you have learned to read more 
carefully. 

If you would like another, similar puz- 
zle, try this one: Figure 2 shows a design. 
Place your pencil anywhere inside or out- 
side that design. The idea is to cross every 
hne-segment with your pencil without 
crossing any segment more than once. 
(This one brings back memories of junior 
high, too.) Good Luck! 

Homebrew transceiver 

Darrell Hohensee (KS) has asked for 
schematic for a 4-band ham uansceiver 
with internal VFO. Well, die best I can do 
is to refer you to the publications of an 
organization of radio amateurs, the 
ARRL or ylmerican fiadio flelay League 
(225 Main Street, Newington, CT 
061 H). I have built and leamed from 
their Radio Amateur's Handbook for 
many years. That and several of their 
other publications contain the kind of in- 
formation you seek. 

Darrell, you are right; you can learn a 
great deal by building (or "homebrew- 
ing") your own equipment. From your 
letter, however, I gather that you have not 
done much constmction. The transceiver 
you ask about is a big project to un- 
dertake, especialy on limited experience. 
There's an old saying about learning to 
walk before you run that applies equally 
well to building electronic projects. If you 
get involved in a big one before you have 
worked your way up to it with smaller 
projects, you can easily get jammed up. 
You can end up with something that is 
partially built and it's easier for someone 
else to start from scratch than to correct 
your mistakes. So start small, Darrell, 
and work your way up. Those ARRL 
books have plenty of less-complex ham 
gear to build, too. 

More on the solar collector 

Marvin Roesch (A2) wants that solar 
follower from the June Hobby Comer to 
return to the east direction under its own 
steam. Apparently, he plans to put a col- 
lector in a remote location. 

The first consideration is a motor to 
turn the mechanism "backwards." That 
can be a second motor or a the original 
motor can be one that will reverse. The 
easiest way to point the collector east is to 



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control the second motor or reverse 
switch with a clock/timer. Every night at 
midnight it can swing die reflector back to 
be ready for the rising sun. It can also be 
done in fancier ways, Marvin, but the 
solution you should always look for is the 
simplest and most straightforward one — 
the one that causes the fewest troubles in 
construction and operation. 

Resistance, reactance, impedance 

A series of basic questions was sent in 
by Anwar Khanb (NY). Space will not 
permit giving detailed answers, but per- 
haps the following will help him and oth- 
ers who may be a bit confused. 

From his letter, I deduce that Anwar's 
fundamental difficulty is in having a clear 
picture of the difference between resist- 
ance, reactance, and impedance. Here are 
some pointers toward the right direction: 
Resistance is the opposition to the flow of 
electrical current that results in heat in the 
conducting material. Resistance is sym- 
bolized in equations by the letter R. It is 
measured in ohms, which are symbolized 
by the capital Greek letter omega (II). 

Reactance is the opposition to the flow 
of AC current. It's symbol is the letter X, 
Reactance is also measured in ohms. 

Impedance is the combination of the 
opposition to the flow of AC current due 
to resistance and reactance. It is measured 
in ohms and is symbolized by the letter Z, 

Though the units of measurement for 
each of them is called the ohm, they are 
quite obviously different. Thus, you can- 
not substitute or switch one for the other. 

There is no formula that relates the DC 
resistance of a coil directly to the (AC) 
impedance or reactance of that coil. 
That's because the resistance is de- 
termined by the type and length of the 
wire used. The reactance is determined by 
how the wire is wound and the frequency 
of the signal that is fed through it. 

Consider this example: the resistance 
of a ten-foot piece of wire is a certain 
number of ohms. That value remains un- 
changed regardless of the form into which 
you put the wire — anything from a 
straight line to a tightly wound ball. On 
the other hand, its inductance, and thus its 
reactance, changes depending on the 
shape(s) into which the wire is placed. 
The reactance is also related to the fre- 
quency,/, of the signal that is fed through 
it(X = 2jt/L). 

So, Anwar, knowing only the DC re- 
sistance of a coil will not enable you to 
determine its reactance or impedance. 
The other factors must be considered. 

Your input 

Your input makes a valuable contribu- 
tion to this column. Your suggestions are 
encouraged. Don't hesitate to ask a 
question-there are probably hundreds of 
other readers who would like to know the 
same thing. And don't forget— I'll be on 
the lookout for your contest entries. R-E 



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FIG. S — TWO OF THE FIVE boards used in thl» project are double-sided. The foil side of one of those 
boards, Board 1t Is shown here half-size. 




— e-lf? INCHES — 



FIG. e— THE COMPONENT SIDE OF BOARD 1. Note the pads tor the male header at the bottom otthe 
pattern. Once again this board Is shown half-size. 




-7-1/2 INCHES- 



FIG, 7 — THE FOIL PATTERN for Board 2. The foil stde of that double-sided board Is shown here 
halt-size. 



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inputs of IC8, the note selector. That one- 
of-sixteen analog switch will output the 
input chosen by the binary word on the 
output-data bus. When the inhibit pin of 
the IC, pin 15, is connected to -I- V, it will 
disable the output. If we're reading a tune 
back from memory, we obviously want 
the output of IC8 turned oti all the time, 
but if we leave it on when we're writing a 
tune into memory we'll run into a prob- 



lem similar to the one we ran into earlier 
when we wanted to play the Pianomatic 
without writing into memory. 

The problem before was caused by the 
fact that there was always data on the 
input-data bus. The problem this time is 
similar. There is always some data on the 
output-data bus, and it's not always the 
data we want. When we're writing a tune 
into memory, pressing a key will cause 



that note to be written into memory. 
Remember that before we pressed the 
key, there was always something stored at 
that location in the memory. Con- 
sequently, until we program the note we 
want, we'll hear whatever note was 
already at that memory address. Even 
when the memory is first put in the cir- 
cuit, some sort of random data will be 
stored in it. If we're writing a tune on a 
page we've previously used, the old tune 
will be stored there. The way around this 
problem is to use the inhibit pin (pin 15) 
of IC8 when we're writing into memory. 
Once again we use the "any-key- 
pressed" signal from the keyboard en- 
coder to enable the note selector. Since 
we need a high to turn off IC8, we have to 
use the inverted version of the ' ' any-key - 
pressed" signal available at the output of 
IC15-C. Switch S2-b connects the inhibit 
pin of IC8 to ground when we are reading 
from memoty and to the inverted "any- 
key-pressed' ' signal when we are writing 
into memory. That means that IC8 is al- 
ways enabled during a read but, during a 
WRITE operation, it's only enabled when a 
key is pressed. Now, it's true diat since 
this same inverted signal is also used to 
generate a write pulse for the memory, 
there will be a period of time when IC8 is 
enabled and the new note hasn't yet been 
written into memory. But let's be realis- 
tic. The write time of the memory is 
something like 300 nanoseconds so the 
old data will be present for only — to be 
generous — a brief period of time. 

Amplifier 

The output of IC8, available at pin 1 , is 
fed to the input of ICIO through CI 8. That 
is a '/2-watt integrated amplifier that can 
directly drive an 8-ohm speaker. The 
noteworthy thing here is that the gain of 
the amplifier is varied by the output of the 
tremolo clock, IC14-a. That is a low fre- 
quency oscillator running at about 6 Hz or 
so. The output is integrated by R3! and 
C21 to produce something vaguely re- 
sembling a sinewave. We're not after per- 
fection here, but we do have to smooth it 
out somewhat. The reason for that is that 
the Pianomatic uses CMOS logic; one of 
the characteristics of that logic family is 
that oscillators using it can swing nearly 
the full range of the supply voltage. For 
the output here, the low point is pretty 
near ground and the high point is within 
shouting distance of the positive supply 
rail. If we connected the tremolo clock 
directly to the gain control pin of the 
amplifier, pin 8, it would turn the ampli- 
fier off every time the oscillator reached 
the bottom of the curve. It would be like 
trying to sing while someone was hitting 
you on the back (although there are cer- 
tain kinds of music where that would be a 
definite plus). 

Because we're using the gain-control 
pin of the amplifier to add tremolo, the 
volume of the Pianomatic is determined 
by the size of the capacitor, C19, that 



connects the output of ICl to the speak- 
er. The value chosen provides a comfort- 
able level but you can change it. Raising 
the value will increase the volume and 
vice versa. Keep in mind though, ICIO is 
only a 1/2-watt amplifier and the speaker is 
a miniature one. If you have visions of 
using the Pianomatic at a rock concert, 
you're going to have to come up with 
some other output stage— you might try 
converting it to run off diesel power. 

Memory retention 

The Pianomatic will remember pro- 
grammed tunes even after it's been turned 
off. That nonvolatility of the memory is a 
nice feature and understanding how it's 
done means that you can use the same 
technique in other designs. Basically 
we're using a backup battery to retain the 
memory and although the same method 
can probably be used with any other 
memory device, there are several memor- 
ies that are specifically designed with that 
feature in mind. Those particular memor- 
ies are the so-called "low -power" de- 
vices. They are generally CMOS and pro- 
vide guaranteed data retention with as 
little as two volts applied. The rules for 
using them are simple since they usually 
have a control pin to switch the memory 
over to the low power mode. The 
Pianomatic uses three 20-milliamp-hour 
(mAh) nickel-cadmium button cells to 
provide a memory-retention voltage of 
3.6. The draw is so low that l-mAh 
nickel -cadmium cells could have been 
used if they could have been found. 

Diodes D14 and D15 are used to steer 
the power for the memory. When the 
Pianomatic is turned on, D15 isolates the 
+ V pin of the memory, D14 protects the 
batteries, and R16 allows the batteries to 
trickle charge at a rate we can figure from 
Ohm's law. 

The operating voltage of the Pianoma- 
tic is 7.3 volts and, since D15 is a silicon 
diode, the drop across it will be about .65 
volts. That makes the voltage at the 
batteries, B9-B11. 6.65 volts. Nickel- 
cadmium button cells should be 
recharged at no more than 10 percent of 
their rated capacity— the so-called CIO 
rate. In the case of our batteries that 
would be a recommended charging cur- 
rent of 20 mA/10, or 2 mA. The batteries 
also have a nominal voltage of 3.6 volts 
(1,2 volts per cell) . Now that we' ve work- 
ed all that out, our charging resistor can 
be figured easily. 



V 


= IR 


R 


= V/l 


V 


= Vsystem ~ Vbatieries 


V 


= 6.65 - 3.6 = 3.05 volts 


1 = 


= 2mA = .002 amps 


R 


= 3.05/.002 


R 


= 1525 ohms 



That's why our charging resistor, R 16, 
is 1 .5K ohms. If you use different batter- 
ies in your Pianomatic, be sure to recalcu- 
late the value of R16. Nickel-cadmium 
batteries have a nasty habit of blowing up 




I- 



•7-1/2 INCHES- 



FIG. 8— FOR SIMPLICITY IN MAKING THE BOARDS, neither of the double-sided boards uses plated- 
through holes. The foil pattern for the component side of the second double-sided board, Board 2, is 
shown here. Once again, that board is shown here hatf-size. 




-3 INCHES- 



FIG, 9-~M0ST OF THE control switches are mounted on this small board, Board 3. Note that this foil 
pattern Is shown fulj-slze. 




-4-1/2 INCHES- 



FIG. 1 0— FOIL PATTERN FOR THE DISPLAY BOARD. Note that there are only nine mounting holes tor 
the LED displays. Pin 1 of each display is not used and therefore has been removed. 




-7-3/4 INCHES- 



H ^ 

FIG, 11— BOARD FIVE is shaped to fit the rear of a piano-shaped case. If a speaker Is mounted on this 
board, the large hole at the top of the pattern will have to be further enlarged so that the speaker's 
magnet-housing fits snugly (see text). 



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if they're charged too fast and/or without 
the proper controls. When the Pianomatic 
is turned on, the batteries charge, and 
when the power is turned off, the batteries 
forward-bias D14 and provide standby 
power to the memory. Capacitor CIS is 
there to catch any glitches that may occur 
if the battery switch-over isn't quite as 
noise-free as we'd like it to be. Pin 17 of 
memory IC4 is the input that controls the 
low-power mode. When it's high the 
memory operates normally and when it's 
brought low the memory is in its low 
power, data-retention mode. We have to 
make sure that this pin is brought low 
before we switch over to the standby batt- 
ery supply. That is easily done by making 
sure that our on/off switch, S8, is a 
SPDT type. When we switch the power 
off, we connect the -H V line to ground. 
Since pin 17 of the memory is on the + V 
bus, our problem is solved. 

If you monitor the voltage on the 
batteries you'll make an interesting dis- 
covery. Although the nominal voltage is 
3.6 volts, the unloaded voltage of the 
charged cells is a bit higher — about 4.2 
volts. When the batteries are put under 
load, that is, used to power something, 
you would ordinaiily exf>ect to see the 
voltage drop to the nominal voltage — ^3.6 
volts. When you turn the Pianomatic off, 
the memory draws whatever power it 
needs to retain the data, but the battery 
voltage won't fall below 4 volts. What 
that is telling you is that the draw from the 
batteries is really low — on the order of 
about about 10 microamps! 

Note counter 

The note counter (ICIl, IC12. and 
D1SP1-D1SP3) is a standard counter- 
decoder/driver combination. IC12 is a 
three-digit counter in one package, is ex- 
tremely convenient to use, and has an 
internal multiplexer for a three digit dis- 
play . The clock, reset, and blanking con- 
trol lines are handled automatically by the 
circuitry and switching of the rest of the 
Pianomatic. Resistors R37 and R38 bring 
the clock- voltage and rise -time require- 
ments in line with those of IC3. That is 
necessary since they are both being in- 
cremented by the same clock. 

Power supply 

The power supply is standard. Diode 
D16 prevents an accidental reversal of 
polarity from damaging anything and the 
voltage regulator, IC13, is set to provide 
the Pianomatic with 7.3 volts. Potentio- 
meter R41 and transistor Ql monitor the 
unregulated voltage. When it falls below 
a preset level, QI conducts and causes 
SCR 1 to fire and light the three decimal 
points in the display. That is a low-battery 
warning; the trip point of the circuit can 
be set by adjusting R41. 

If you look closely at the schematic and 
follow the output of SCR 1 , you'll notice 
that there are two resistors (R30 and R40) 
on the line in series. The reason for that is 



PARTS LIST 



All resistors V* watt, 5%, unless other- 
wise noted 

R1, R7. RIO, R17— 8200 ohms 
R2— 6800 ohms 
R3, R8, R2&— 1 megohm 
R4, R38— 10,000 ohms 
R5— 3000 ohms 
fl6. R12, R30— 1000 ohms 
R9— 150,000 ohms 
R11, R15— 100,000 ohms 
R1 3-^70 ohms 

R14, R19-R28, R36, R40— 160 ohms 
R16— 1500 ohms 
R18 — 82,000 ohms 
R31— 22,000 ohms 
R32, R33— 560,000 ohms 
R34— 390 ohms, Vi watt 
R35— 1 5,000 ohms 
R37, R39— 2200 ohms 
R41— 500,000 ohms, multi-turn potentio- 
meter, PC mount 
Capacitors 

CI , 04, C6, 08, C9, 01 3, CI 5, 01 8, 020, 
C23, 028— 0.47 |xF, 35 volts, tantalum 
02—0.5 |i.F, ceramic disc 
03. C22— 100 pF, ceramic disc 
05, 016—0,22 \xF, 35 volts, tantalum 
07. 019—2,2 [iF, 35 volts, tantalum 
01 0,011, 01 4, 025, 026, 029— 0.01 fi.F, 

ceramic disc 
012 — 47 pF, ceramic disc 
C17— .001 jiF, ceramic disc 
C21— 10 jiF, 16 voits. electrolytic 
C24— 500 (iP. 25 volts, eiectrolytic 
027- 100 \xF. 16 volts, electrolytic 
Semiconductors 
IC 1-^51 4 1-of-16 data selector 
IC2 — 4520 dual binary counter 
103 — 4040 1 2-stage binary ripple counter 
104— 5101 L-1 256 x 4 static RAM 
105 — 4066 quad analog switch 
106-451 5 1 -of-1 6 data selector 
107— 50240 top-octave generator (AMI, 

Mostek) 
108 — 4067 1 -of-1 6 analog switch 
109 — 4082 dual 4-input and gate 
IC1 0—386 Vi-watt audio amplifier 
101 1—451 1 BCD-to-7-segment-display 
decoder/driver 



1 



IC12 — 4553 3-digit counter 

1013 — 7805 five-volt positive regulator" 

IC1 4-^093 quad 2-input nand Schmitl 

trigger 
1015 — 4049 hex inverter 
SCR1— EOG 5400 or equivalent 
Ql— 2N2222A or equivalent NPN silicon 

transistor 
D1-D3. D5-D7, D9, D11, D13. D17, 
D1 3—1 N34A germanium diode 
D4. D8, D10, D1 2— 11^914 silicon diode 
D14, 015— 1N4001 silicon diode 
D16— 1N4003 silicon diode 
DISP1-DISP3— FND 359, common 
cathode 7-segment displays with 
decimal point 
LED1-LED1 3— miniature red LED 
LED14-LE01 6— miniature green LED 
SI -S3, 37- DPDT miniature switch 
S4-S6— SPST normally open momen- 
tary switch 
S8 — SPDT miniature switch 
S9-S24— SPDT miniature lever-type 
switch. Radio Shack 275-016, or 
equivalent 
J1— miniature N.C. chassis-mount phone 
jack. Radio- Shack 274-253 or equiv- 
alent 
SOI , S02— female header strips, AP 

Products 929974 or equivalent 
PL1-PL5— male header strips, right- 
angle. AP Products 929835 or equiv- 
alent 
PL6 — male header-strip, AP Products 

929834 or equivalent 
B1-B8— 1 .5-volt alkaline "AA" cell 
B9-B11 — nickle-cadmium "button" cell, 

20 mAh, or larger 
Miscellaneous: PC boards, 10 sockets, 
female header-strips (AP Products 
929974 or equivalent) for in- 
terconnections (see text), solder, wire, 
case, etc. 

A set of the five PC boards, etched and 
drilled, but not plated through, is avail- 
able from Hal-Tronix, PO Box 1101, 
Southgate, IMI 48195. The price is 
$39.95. Please add $2.00 for shipping 
and handling. Ml residents add 4% tax. 





F TABLE 2— 


BOARD 2S0ARD 3 CONNECTIONS ^M 


Pin 


Switch number 


Connection 


■ 


number 


and position 








■ 


1 


S2-h, WRITE 


From Board 2. 


pin 17(IC15, pln6) ^M 


2 


S2-a, center 


" 


'f 


" 


" 4(103. pin 11) '^M 


3 


S2-b, center 


" 


'* 


" 


" 5(108, pin 15) ^M 


4 


S3-b, MANUAL 


" 


" 


" 


"15(IC6, pin 1) ^H 


5 


S3-a, center 


" 


" 


" 


" 2 (D3, D6 junction) ^H 


6 


S3-b, center 


" 


" 


" 


" 1 (Blanking) ^H 


7 


S3-a, AUTOMATIC 


,i 


" 


" 


"14(IC15, pin3) WM 


8 


Various 


" 


" 


" 


" 6 (Ground) 


9 


S7-b, PLAY 


" 


" 


" 


"16(1015, pin 7) 


10 


S7-a, center 


" 


" 


" 


"15(106, pin 1) 


11 


S7-b, center 


w 


ir 


" 


" 7 (105. pins 5. 6, 12. 13) ^ 


12 


Various 


" 


tl 


" 


''13( + V) a 


13 


SI -a. center 


" 


" 


" 


"12(103, pin 4) ^M 


14 


St -a, 2 TUNES 






" 


''10(IC4,pln7) ^M 


15 


S1-b, 2 TUNES 


" 


" 


" 


" 9 (102. pin 12) ^m 


16 


Sl-b, center 


" 


'■' 


" 


"11(R-12) ^ 


17 


Sl-b. 4 TUKES 


^ 


" 


" 


" 8(IC2, pin13) jl 


18 


S1-a, 4 TUNES 








" 3(D18) ^H 




TO ^^ 
SPKR J 
(SEE < 
TEXT) K.- 



T PL6 27 

(TO BOARD 2) 
•FEEDTH ROUGH 

FIG, 1 2— PARTS-PLACEMENT DIAGRAM for Board 1 . Note that female header, PL6, mounts on the foil 
side of the board. 



LED! 



S24 
S9 




SQ1 (TO BOARD*) 

U Ivi 

B 1 \i 



^'1 



FL2 ■;: 

rrO BOARD 3-SEE TEXT) 



' = FEEOTHROUGH 



FIG. 13— AS SHOWN HERE, the cathode connections for LED1-LED16 are located on the foil side of 
Board 2. 



ps6°nD'aJ 



S7 



C22 




S3 



S2 



t 



EE 



RIB 



DtB 



S3 



PL3 
(TOBOARD2-SEETABLE2I 



-UNREGULATED 
VOLTAGE OUT 
(TO BOARD 5) 

- UNREGULATED 
VOLTAGE IN 
(FROMJl) 



FIG. 1 A — THIS TINY, single-slded, board can be mounted anywhere that is convenient. In the prototype 
It was mounted in a "piano bench." 



that they are on two separate boards. Re- 
sistor R40 is on the display board because 
locating it there allows us to test the board 
all by itself. 

Keyboard display 

The last part of the Pianomatic that 
we'll look at is the keyboard display, con- 
trolled by 1C6, a one-of -sixteen data 
selector similar to the keyboard selector, 
IC 1 . The output-data bus is monitored by 
IC6; that IC puts a low at the pin selected 
by the word on the bus. Those outputs are 
used to turn on small LED's buried in the 
piano keys. The inhibit input is connected 
to the center pole of switch S7-b, half of 
the play/memory switch. That means 
that the LED's will be turned on only 
when the memory is enabled. Since only 
one LED will be on at a time, we only 
need a single current-limiting resistor, 
R36. 

Construction 

Now that we understand how the 
Pianomatic works, we can put it together. 
You could use perfboard and wire wrap 
the whole thing — after all, the pyramids 
were built thousands of years ago with 
primitive tools and they've lasted — but the 
use of printed -circuit boards is strongly 
suggested- The PC-board patterns for the 
device are shown in Figs. 5-11; the parts- 
placement diagrams are shown in Figs. 
12-16. If those are used, the project be- 
comes neater and cleaner. 

There's nothing particularly com- 
plicated about the construction of the 
Pianomatic. The circuit has been de- 
signed to fit on five separate boards. The 
interconnection diagram for the boards is 
shown in Fig. 17 (which appears next 
month). The interconnection between 
boards 2 and 3 is a little complicated, so to 
simplify things it's been listed in Table 2. 

There is one small complication with 
the boards: two of them — boards 1 and 
2 — are, unfortunately, double sided. 
Don't forget to solder small pieces of wire 
to both sides of the double-sided boards as 
feedthroughs. All feedthroughs are in- 
dicated by asterisks on the appropriate 
parts -placement diagrams. Where possi- 
ble, the feedthroughs were done on the 
legs of the components, but there are 
some that had to stand by themselves, 

A few important points; First, note that 
the pads for the LED's are on the front of 
board 2 in between the pads for keyboard 
switches S9-S24 (see Fig. 13). Notice 
that the cathode pads are on the compo- 
nent side of the board and the anode pads 
are on the foil side. Also, the cathode of 
LED 16 is used as a feedthrough between 
the two sides of the board; be sure to 
solder it on both sides of the board. Final- 
ly, watch the polarity of electro lytic s and 
IC's and above all, use IC sockets. 

There are several options available to 
you in building the Pianomatic and one 
really tricky thing to watch out for. You 
can change the speed of the tremolo by 



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RG. 15— THE DISPLAY BOARD mounts directly on Board t using a right-angled male header, PL4. 




UNREGULATED 
VOLTAGE IN 
tTDaOABD3) 

UNREGULATED 

VOLTAGE OUT (TO BOARD 3) 

FIG. 16— MOST OF THE POWER-SUPPLY COMPONENTS mount on Board S. Batteries B1-B8 and Jack 
J1 can t>e mounted anywhere that is convenient, in the prototype they were mounted in the wood base. 



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adjusting the value of R32. Raising the 
value will slow it down and lowering the 
value will, logically enough, speed it up. 
The pitch of the Pianomatic can be 
changed by adjusting the parameters of 
the oscillator made from lC15-e and 
IC15-f. Just plug the values of R35 and 
C22 into the formula/ = 1/2. 2RC and 
you'll be OK, Remember, though, IC7 
does a good deal of division internally. 
The lowest note available from 1C7 is the 
input frequency divided by 478, so bear 
that in mind when you start substituting 
values. 



The tricky part of the Pianomatic is the 
tempo clock. Getting it to work in the 
manual mode is straightforward and 
shouldn't present any problems — getting 
it to work in automatic is something else. 
The problem comes about because you're 
operating at the upper and lower trip 
points of the Schmitt trigger. Although 
things seem clear cut when they're on 
paper, and formulas and graphs indicate 
all sorts of precision, dealing with the real 
world is quite another matter. 

The important parameters in the tempo 
clock are R2, R3, and R4. Resistor R3 



serves the same purpose as R31 does in 
the tremolo clock. It sets die frequency of 
the clock. Either R3 or C8 can be altered 
to change the tempo. The relationship is 
complicated but is of the form / = (1/ 
RC)K, where K is a constant. The voltage 
divider made up of R2 and R4 is what sets 
things up for automatic playback. In man- 
ual playback, the voltage at pin 12 of 
IC14-d should be at ground when the 
clock is disabled and about one third be- 
low the supply rail when the clock is 
enabled (when the start switch, S4, is kept 
closed). In automatic, the voltage of pin 
12 should be half the supply voltage when 
the clock is disabled. Now, mind you, 
that is in theory. What we're trying to do 
is keep the voltage in the middle of the 
dead -band area of the Schmitt trigger. 
That way it only takes a little push in 
either direction to enable or disable the 
clock. 

When you put your Pianomatic in auto- 
matic, one of three things will happen — it 
will work perfectly, it won't start, or it 
won't stop. Assuming the pin- 12 voltage 
is correct, the problem facing you is that 
there are variations in the dead band from 
IC to IC. You'll find that some Schmitt 
triggers have a dead -band area that tends 
to favor the upper end of the supply, while 
others favor the lower end. That is nonnal 
and the solution is to vary R2 and R4 until 
the circuit works. Now, nothing would 
make us happier (well, a few things 
would) than to give you numbers, but that 
is impossible. We've taken our Pianoma- 
tic, which works perfectly, and sub- 
stituted different 4093 's for IC14. Some 
would work and some wouldn't, even 
though no other changes were made in the 
circuit. Even IC's from the same produc- 
tion run will have different trip points. Be 
comforted by knowing that any of those 
IC's could be made to work by foohng 
around with the values of R2 and R4, The 
best way to find the correct value.s for 
your circuit is to realise that varying R2 is 
going to have a much greater effect than 
playing around with R4. We've seen that 
R4 has a function when the Pianomatic is 
in manual as well as automatic 
playback— it pulls pin 12 low to stop the 
clock. On the other hand, R2 has no pur- 
pose in life other than keeping pin 12 in 
the middle of the dead-band area when the 
Pianomatic is set to automatic playback. 

Raising the value of R2 will lower the 
vohage on pin 12 and lowering the value 
will raise the voltage. If your Pianomatic 
won't start playing in automatic, the volt- 
age on pin 12 is too low — -if it won't stop 
playing, the voltage is too high. Don't 
make heroic changes in the value of R2, 
however, because, as you'll discover, a 
handful of ohms will go a long way. In 
fact, going up or down about 2K should 
solve the problem. 

Next month the fmal installment on the 
Pianomatic will discuss the voltage- 
regulator circuit, operation, 
troubleshooting, and calibration. R-E 



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INFORMATION CARD 



i^ctronics 



OCTOBBR 1983 



I 



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^ Copyright Gflmsbac4( PuWicatrons, inc.. 19S3 



"I MAS BKEN ONLY A YHAR SINCE THK 

last Your Own Computer hardware 

-buying guide was published, but what 
a year it has been! Almost overnight, the 
shape of the microcomputer world has 
been changed. A generation of new 
microcomputers has appeared, bringing 
low-cost computing power to price levels 
unimagincd at the time. 

The primary change that brought this 
about has to do with economics more than 
anything else. As recently as five or six 
years ago, the small piece of silicon that 
carries the number-crunching circuitry- — ■ 
the CPU (Central Processor Unh} — cost 
as much as $50 or more isi small quantit- 
ies. Yes. they were used in many items 
and as they became more common their 
cost began to drop. Soon they were sell- 
ing for S20, and shortly thereafter for 
SIO, The economies resulting from mass 
production techniques were making 
themselves felt. 

.'\t the same time, the price of mass 
memory fell dramatically. No longer was 
the price of this key ingredient in the 
makeup of a personal computer pro- 



COMPREHENSIVE BUYERS GUIDE 
TO COMPUTER SYSTEMS 



MARC STERN 



UndepSSOO $2500-83000 
SSOO-SIOOO $3000 $3500 
$1000-$1500 $3500-34000 
$1500-$Z000 $4000-$4500 
$Z000-$2500 Over $4500 




' >^ A SE 3C JK SL' ^ m « » 

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A NEW GENERATION OF COMPUTERS, the lap compuler, makes tU 
appearance this year. 

hibitive. Instead, like the price of CPU's, the price of the 
memory IC's used to store information for use by the 
microcomputer fell to low levels, with the result that there are 
now home computers that have as much on -board memory as 
some of last year's higher-priced models. This development in 
the home-computer market is perhaps more dramatic than any 
other that has occurred in the last few years. 

8-blt/1 6-bit CPU's 

The face of the microcomputer industry is changing. No longer 
is the industry standardized around an 8-bit CPU (the length of a 
digital "word"). Instead, the standard word size found in many 
of today's moderate and higher-priced home-microcomputer 
systems is 16-bits. A t6-bit CPU can address more memory 
space. Where the 8-bit machine is limited in its memory- 
addressing capability to 64K bytes (actually 65,536 bytes) of 
memory to perform its tasks, the 16-bit CPU can address more 
than I megabyte. Thus, the 16-bit CPU can handle tasks that are 
far too complex for the 8-bit machine to handle and it can handle 
those tasks faster. 

It should be noted, though, that 8-bitCPU's are still more than 
powerful enough for the average, single home user, so it isn't 
necessary to spend the extra money for a 16-bit system, unless 
you need its extra computing power. 

The inevitable move to 1 6-bits has been spurred by the entry 
of IBM into the microcomputer market. Long dominant in the 
mainframe world, this computer giant jumped into the micro 
worid nearly two years ago and, since that time, it has become a 
major force. Of course, Apple, Radio Shack, Heath, and Com- 
modore Business Machine microcomputers are still abundant; 
but it has been estimated that nearly 20 percent of the 
microcomputer market is held by IBM and, with such represen- 
tation in the market, it naturally calls the tune. 

Thus, more and more microcomputer systems are becoming 
IBM-workalikes, IBM-lookalikes or IBM-compatibles. They 
also run similar operating systems to IBM's PC-DOS. In the 
non-IBM world, this disk operating system is known as MS- 
DOS and you will see many references to it in the "Operating 
System" category of the pricing charts included in this buying 
guide. Such is the success and dominance of this microcomputer 
system that other computer manufacturers are going out of their 
way to make their machines compatible. 

In a sense, this is a good move because it provides a measure 
of standardization in an otherwise nonstandard, incompatible 
market. Just as IBM's 8-inch floppy -disk format became a 
standard, so to has its operating system become a standard for 
the micro world. However, it should be realized that though a 



THScran^na^^^apaoi^niinning MS-DOS, it may still be 
incompatible with others on the market because of incompatible 
storage formats. That is one facet of the microcomputer market 
that has yet to be worked out. 

This trend has its parallel in the 8-bit world. The CP/M 
(Control Program/Microcomputers) operating system became 
the de facto 8-bit standard operating system because of its early 
headstart and subsequent dominance in this sphere. Yes, there is 
a ! 6-bit version of CP/M (CP/M-86), but it hasn't achieved the 
dominance of MS-DOS. 

Porlable computers 

Another trend over the last year has affected the so-called 
portable market. Just a year ago, this type of computer was the 
rage of the microcomputer world. It had the following attributes: 
a smalt CRT screen (5 to 9 inches) built-in; two disk drives for 
storage; or comprehensive software applications packages in- 
cluded, and weighed up to 30 pounds. At this weight, diese 
machines were certainly transportable, but were they portable? 
Obviously, the microcomputer industry didn't believe they were 
because it has come out with a new generation of lap computers 
(also called notebook or briefcase computers) which weigh 
between 9 and 1 1 pounds. This new generation has also split the 
" 'portable' ' market into the transportable computer market, as 
the heavier machines are called, and the lap-machine market, as 
the new notebook-sized machines are called. 

Last year's portables are as different from these machines as 
day is from night. Where last year's portable had the two 
power-hungry drives and the CRT, this year's crop of lap 
computers is capable of running off battery power. And, where 
last year's group of machines included software packages that 
were stored on minifloppy diskettes that had to be inserted into 
the drives before they could be used, this year's breed of lap 
computers includes software that is part of the machine itself. 
This software is stored in ROM (fiead-Only Memory) and is 
accessed with the push of a button. Typically, this software 
includes some variety of text editor, electronic mail system, 
appointments calendar and more. The lap computer usually 
includes at least 16K of user memory (RAM) with the upper 
limit being either 32K or a full 64K. 

Like last year's portables, the majority of today's lap 
machines are driven by 8-bit CPU's, although some contain 
16-bit CPU's, These microcomputers, though, aren't power- 
hungry. Instead, they are CMOS 8- or 16-bit microcomputers, 
which mean these machines can rely on battery power. 

Unlike last year's portables, though, these compacts rely on 
liquid crystal displays, rather than cathode-ray tubes. Using this 
remarkable technology, the industry has been able to develop 
8-line by 40-charactcr displays for the new generation of lap 
computers. This means these devices are free of the need for 
large power-supplies and AC outlets. 

Generally, these machines— like last year's models— feature 
full -travel, typewriter- style keyboards, which is a remarkable 
feature, when you consider that microcomputers of the same 
size class last year featured membrane or rubber overlay key- 
boards. 

Like their larger counterparts, though, the new portables also 
feature some sort of storage medium. Some feature cassette 
interfaces for mass storage, while others — the Epson QX- 10, for 
instance — have integral minicassette data storage. Still other 
portables use the more traditional minifloppy disks for storage, 
although they are capable of storing some information that may 
have been generated in the field in RAM. 

An interesting use of RAM has been made by Athena Compu- 
ter and Electronic Systems in its Aihena I. Instead of using two 
disk-drives for mass storage, it uses RAM configured as a 
storage device. This allows a user to load applications software 
and files and use this memory space for work. The key advan- 
tage to using RAM in this configuration is a manyfold increase 
in speed because the necessary program files are available in 
memory for instant use. There is no need to wait for a disk access 
that slows program speed. 



■76 



It must be noted that although RAM drives, as these are 
termed, are very quick and speed things up greatly, they are also 
volatile. In other words, the contents of these drives disappear as 
soon as the power is turned off. So, unless you want to keep the 
computer on all the time, you must eventually empty the con- 
tents of the RAM drive to some sort of storage device, which the 
Athena I does. It provides one standard drive for storage. 

About this supplement 

In this year's Your Own Computer supplement, we will take 
a look at small computer systems in order of increasing price, 
from below § 100 to over S4500. A series of chads will help you 
understand how small-computer systems become more power- 
ful as their prices increase. They will also show you the trends 
that we have just mentioned. 

In a departure from last year's supplement, we have omitted 
printers because of the wide variety available for a wide range of 
prices. This means that instead of having to rely on a man- 
ufacturer's suggested printer, the small-computer buyer can find 
one of his own, within his price range. And, since most printers 
interface with small computers in only one of two manners, 
serial or parallel, there should be little trouble interfacing the 
printer with the computer. Thus, because of the disparity in 
printer prices and varieties, we leave it up to the individual buyer 
to make his own choice. 

As for the system prices you will find they might differ 
somewhat from what you may see advertised. The reason is 
quite simple, we are using the manufacturer's suggested retail 
price as the basis for our pricing considerations. Using this type 
of guideline provides a more objective standard by which to 
judge the many systems on the market. 

Many, but not all, computers can be purchased ready to plug 
in and run . They will usually have a minimal amount of standard 
memory and provisions for a video display. Furiher, they will 
also usually have some provision for storing programs and data, 
either on cassette tape or floppy disks. Most of our systems 
assume that^after the lowest price level— you will be buying 
one of the display devices offered by the manufacturer. The 
prices reflect this, although it should be noted that you can also 
buy a monitor yourself and save money with it. 

Regardless of whether a particular device is included with our 
listings, the computer can usually be purchased without it and, 
in many cases, you will want to do that and then add the 
peripherals that t>est meet your needs. 

For your own shopping, though, one ofthe items that must be 
carefully considered is the amount of memory available for a 
system. Memory is the most vital consideration in any small- 
computer system. The reason is that without it, the system is 
little more than an ineri box, capable of little or nothing. Mem- 
ory is vital because it provides an area in which to store and 
manipulate data. 

Most small computers come with a minimal amount of user 
memory, usually ranging from 4K to 16K. While this level is 
adequate for game-playing and simple home applications, a 
computer used for more serious purposes will generally require 
at least 48K or memory and most of the systems mentioned in 
our supplement can be expanded beyond diis point. And, with 
the new generation of memory-intensive 16-bit programs com- 
ing onto the market, 48Kis not enough, with a minimum of 64K 
preferred, although i28K is better. 

Some of the computers you will find listed here are "micro- 
mainframes." These systems are little more than boxes housing 
the CPU, disk drive storage devices and motherboard — ^thc 
board that carries the bus signals. Usually found on high-end 
systems, these machines have several input/output ports and you 
will also find that these systems must have terminals or worksta- 
tions attached to them before they can become useful. Typically, 
these systems are usually found in multiuser environments, 
although a single user can functions with one, too. 

Every small-computer system comes with some means of 
mass data storage. The device can be a cassette interface or 
floppy-disk drives and controller. These devices allow data to be 




uSmpubBPi 



stored for future use. Our tables show the typical configuration 
for the price range in question. In nearly every case, there are 
other alternatives open to the user, but it should be kept in mind 
that these are more expensive. For instance, the typical dual- 
drive 5 '/4-inch configuration may add $300 to $500 to the cost of 
a typical one-drive system, while an 8-inch drive may add S 1500 
or more. Also keep in mind, though, that higher-density storage 
options increase the usefulness of the system, but at a cost. For 
instance, a double-sided, double-density 8-inch floppy disk 
storage system is capable of storing 2 megabytes of information 
or about 16 million bits of information (8 bits to a byte). 

Some of our completed systems mention ' 'hard' ' or Winches- 
ter disk storage. These fixed medium storage devices are cap- 
able of huge amounts of storage, 5 megabytes and up to 20 for 
the typical 5 '/(-inch hard disk system. However, they add con- 
siderably to the cost of the unit — from $1500 to $.3000 on 
average — and they should only be considered for serious com- 
puter work. 

For the typical small-system user, we recommend a two-drive 
floppy-disk system. Not only will this give you greater storage, 
but you will also find it faster to copy files from one disk to 
another. More important, if you can afford this type of system, is 
the fact that if the storage capacity of the disk is small , it may not 
be possible to hold both the DOS (Disk Operating 5ystem and 
the data you require. In the two-drive configuration, one drive is 
used to hold the application program and DOS , while the second 
drive holds the data. 

Most systems require the use of a keyboard for input and some 
type of video display device for output. The most inexpensive 
computers usually rely on a home television set and interface 
with the video unit through an RF modulator. You will find the 
definition and clarity of this type of display device is poorer than 
a dedicated monitor. The RF modulator will usually be built into 
the unit or might be an extra-cost add-on and it pays to check. 

Some computers, the Heath H89 or Radio Shack TRS-80 
Model ni, come with built-in video display devices, while 
others, primarily the micromainframe category, require auxil- 
iary terminals — a combination keyboard and display unit. If you 
opt for this type of unit, it should be noted that terminal prices 
Stan about S^. 

We have tried to give you as complete an indication as 
possible as to what the display situation is with a particular 
system. However, it should be kept in mind there might be 
several possible choices for any system. 

The tables included with each price-category section show 
which computers, features and accessories you can expect to 
find in a typical system within that price range. If a system has q . 
been upgraded from the previous table, the new information ^ 
appears in blue print in the comments line to the right of the ^ 
table. The tables will give you an idea of what you can get for a 33 
given price; a local computer store will be able to answer your 
questions and tailor a system to your specific requirements. R-E 



c 



OMMODORE 



64 



COMPUTER AND SOFTWARE 



(mora powar than Appla II at halt in« prict) 



SALE 



M39. 



00* 



weHwe 

have! HAVE 

^ theBthe 

• 170K DISK DRIVE $179.00^ BEST I LOWEST 

• TRACTION FRICTION PRINTER $1 19.00 * SERVICE | PRICES 

{* with software savings applied) 



VIC-20 

(a real computer at the price of a toy) 



^77. 



00* 



• 40-00 COLUMN BOARD $99.00 * 

• VOICE SYNTHESIZER $69.00 * 

1 * with Casselle and Gortek purchase) 



COMIWODORE 64 COMPUTER $139.00 
You pay only $239.00 wlien you order the power- 
ful 84K COMMODORE &4 COMPUTEF^I LESS the 
value of the SPECIAL SOFTWARE COUPON we 
pack with your computer that allows you to 
SAVE OVER S 100 off software sale prices! ! With 
only 1100 of savings applied, your net computer 
cost Is S139.00I! LESS a $49.50 BONUS PACK of 
30 programs on tape or disk we give you ab- 
solutely FREE! [I 

170K DISK DRIVE S179-00 

You pay only S2 79.00 when you order the 170K 
Disk Drive! LESS the value of the SPECIAL 
SOFTWARE COUPON we pack with -your disk 
drive that allows you to SAVE OVER $100 off 
software sale prices!! With only J100 of savings 
applied, your net disk drive cost Is $179.00. 
LESS a $49.50 BONUS PACK of 30 disk pro- 
grams we give you absolutely FREE! 1 1 



TRACTION FRICTION PRINTER S119.00 

You pay only $219.00 when you order the Com- 
star JIf deluxe line printer that prints 8 1(2 x 11 
full size, single sheet, roll or tan fold paper, 
labels etc;. 40, 66, SO. 132 columns. Impact dot 
matrtJi, bl-dlrectional, 80 CPS LESS the value ot 
(he SPECIAL SOFTWARE COUPON we pack 
with your printer that allows you to SAVE OVER 
$100 off software sale prices!! With only $100 of 
savings applied your net printer cost is only 
$119.00. 



ao COLUMN BOARD $149.00 

You pay only $149.00 tor this SO Column Board 
when It Is purchased with a COMMODORE 64 
Computer or a Disk Drive or a Printer or a 
Monitor. It purchased alone the sale price Is 
$169.00. Included with this board is word pro- 
cessor pack, electronic spread sheet and ma,. 
merge data base on two tapes. List $249.00. 
(Disk add $10.00). 

EXECUTIVE 
WORD PROCESSING PACKAGE 

SCRIPT 64 EXECUTIVE WORD PROCESSOR Is 
the finest available for the COMMODORE 64 
Computer! THE ULTIMATE for PROFESSIONAL 
wordprocessing application. Featuring slmpla 
operation, powerlui text editing with a custom- 
ized word dictionary, complete cursor and In- 
sert/delete key controls, line and paragraph in- 
sertion, automatic deletion, centering, margin 
settings and output to all printers. Included is a 
powerful MAIL MERGE When used with THE 
COMPLETE DATA BASE PACKAGE. List $99.00. 
Sale $79.00. Coupon Price $52.00. (Disk only). 



SPECIAL SOFTWARE COUPON 



Wa pack a SPECIAL SOFTWARE COUPON 
with aver^ COMMODORE 64 COMPUTER- 
DISK DRIVE-PRINTER-MONITOR we sell! 
This coupon allows you to SAVE OVER 
$100 OFF SALE PRICES! $200-$300 say- 



ings ara postibtel 



(ex ample) 



PROFESSIONAL SOFTWARE 
COMMODORE 64 

Lilt Coupon 

Ex«cutiw Word ProcAsaor $99.00 $52.00 

Complsts Dal* B*34 U9.00 I4«.aO 

Electronic Sprvadahflflt Sd9.00 1^.00 

AccounUng Picii 169.00 132 W 
Tot*l5.2WortJ Processor— Plus 

T»f» W9.00 W7.00 

Disk in.SS 141.1X1 
Totil Text 2.B Word Proceseor— 

Tape $44.95 tZe.OO 

DIsV $49.95 $26.00 

Total UlMl 2.6 S24.95 $12.0C 

OUH $2995 $15.00 
Oulck Browr) Fox Word 

Processor $09.00 $40.00 
Programrnara Retarancs 

Sulda 120.06 $12.50 

Programmers Helper $69.00 140.00 

Basic Tutor (29.95 $15.00 

Typing Tutor $29.95 116.00 

sprite Deslgnar $16.95 $t0.00 

We<tlclnemen $19.95 $12.00 

Weather War 1 1 t^9M SI 2.00 

IMuSIC-IMalier $19.95 $12.00 

EDUPlcV t24.96 S13.00 

3DMi2eCraie $24.95 S13.00 

ProfsasionaUoy such 12495 $1200 

Light Pan 139.95 12000 

[>eluxe Dust Cover $ 6.95 $ 4.S0 
isnti itiiny olhsr ittfnst 

Write or call for 
Sample SPECIAL SOFTWARE COUPON I 



PROFESSIONAL BUSINESS SOFTWARE 
EXECUTIVE QUALITY BY TIME WORKS! 

The Cadillac of business programs 
for Commodore 64 Computers 



item 


List 


'SALE 


Inventory Management 


$89.00 


$69.00 


Accounts Receivabie 


$Bg.0O 


$69.00 


Accounts Payable 


$89.00 


$69 00 


Payroll Management 


$89.00 


$69.00 


Cash Flow Management 


$89.00 


$69.00 


Sales Analysis 


$89.00 


$69.00 


General Ledger 
('COUPON PRICE $59.00) 


$89.00 


$69.00 







VIC-ZO COMPUTER $77.00 

You get the Commodore VIC-20 Computer for 
only $77.00 when you buy at sale prices: The 
Commodore Data Cassette tor only $69.00 and 
the Gortek Introduction to Basic program lor on- 
ly $19.96. TOTAL LiST PRiCE $302.95. SPECIAL 
PACKAGE SALE PRICE $165.25. 



40-80 COLUMN BOARD $89.00 

A fantastic price breakthrough for VIC-20 owners 
on this most wanted accessory!! "Now you can 
gel 40 or 80 Columns on your T.V. or Monitor 
Screen." Plus we add a word processor with 
mail merge, electronic spread sheet, time 
manager and terminal emulator! ! These PLUS 
programs require 3K or 16K RAM memory. (Disk 
add $10.00). 

VOICE SYNTHESIZER $59.00 

Votrax Based. I^ake your VIC-20 COMPUTER 
TALK! Has features equivalent to other models 
costing over $370.00. You can program an 
unlimited number of words and sentences and 
even adjust volume and pitch. You can make 
adventure games that talk! A must for enhanc- 
ing your programming creativity and pleasure. 

60K MEMORY EXPANDER SS9.00 
Sixsiot — Switch selectable — Reset button — 
Ribbon cable. A must to get the most out of 
your VIC-20 Computer. Includes FREE $29.95 
adventure game. 

BK RAM CARTRIDGE $39.95 
Increases programming power 2 V2 times. Ex- 
pands total memory to 33K (33,000 bytes). 
Memory block switches are on outside of covert 
Includes FREE $1 6.95 game. 

tCK RAM CARTRIDGE $69.00 
Increases programming power 4 times. Expands 
total memory to 41 K (41,0(X) bytes). Memory 
bloci( switches are an outside cover! Includes 
FREE $29.95 adventure game! ! 

12" GREEN SCREEN MONITOR $109.00 

Excellent quality GREEN PHOSPHOROUS 
VIDEO MONITOR with antiglare, 1920 characters 
(80 characters x 24 rows). Save your TV! a must 
for iO column word processors. PLUS $9.95 for 
VIC 20 or Commodore 64 Cable. 



12' AMBER SCREEN MONITOR $149.00 

Premium quality AMBER VIDEO f^Of^lTOR With 
antiglare, (80 characters x 24 rows], exceptional- 
ly clear screen, faster scanning, 1000 lines. 
PLUS $9.95 tor VIC 20 or Commodore 64 Cable. 



] 



• LOWEST PRICES • 15 DAY FREE TRIAL • 90 DAY FREE REPLACEMENT WARRANTY 
• BEST SERVICE IN U.S.A. • ONE DAY EXPRESS MAIL • OVER 500 PROGRAMS • FREE CATALOGS 



I Add $10.00 for shipping, handling and Insurance. Illinois residents 
I please add 6% tax. Add $20.00 for CANADA, PUERTO RICO, HAWAII 
I orders. WE DO NOT EXPORT TO OTHER COUNTRIES. 
I Enciose Cashiers Check, Money Order or Personal Check. Allow 14 days 
I for delivery, 2 to 7 days for phone orders, 1 day express mall! Canada 



orders must be In U.S. dollars. VISA- MASTERCARD ACCEPTED 



CK|TEDpD|7CC (WE LOVE OUR CUSTOMERS) 

BOX 550, BARRINGTON, ILLINOIS 60010 
Phone 312/382-5244 to order 



CIRCLE 24 ON FREE INFORMATION CARD 



IB. 




uampuCBP} 

Under $500 



It's amazing how much 

computer power can be 

bought for less than $500, 

Let's take a look. 



Under ^500 



MARC STERN 



PERHAPS THE MOST VOLATILE SEGMENT OF THE PERSONAL- 

computer marketplace is the segment under $500. Since last 
year's supplement was published, seven new names have joined 
the ranks of the manufacturers producing machines here. Those 
manufacturers include some of the leading names in consumer 
electronics, notabiy Mattel and Panasonic, while the others 
include new companies whose products are now just hitting the 
market. 

Timex 

Still leading this price segment is the Timex-Sinclair 1000 
(formerly theSinclair 2X5/). Atiny machine, about the size of a 
book, it features 2K of user memory— expandable to 1 6K — and 
a cassette interface. Essentially, it is a computer learning ma- 
chine with which one can begin to understand the basics of 
microcomputing. Supplied with the JOOO is a BASIC learning 
guide with which you can learn how to program in this high- 
level language. 

The BASIC programming language is resident in 8K ROM 
(/iead-Only Afemory). The lOOO's unique multi-function, 
single-key entry system permits the user to enter BASIC com- 
mands and instructions with a single push of the tiny 
microcomputer's membrane keyboard. 

This type of keyboard, which has been used on other 
machines on the market, is fme for hunt-and-peck typists, but it 
is lacking for touch typists. In fact, the size of the unit makes 
speedy text entry nearly impossible. 

Capable of interfacing with a home television set as an output 
device, the 1000 has a limited 32-character by 24-Iine display. 
This is less than half the industry-standard 80 by 24 display and 
this is limiting because the display isn't entirely flicker- free. 

Moving up a notch from the 1000, we come to the recently 
introduced 1500. Driven by a Z80A microprocessor, the same 
CPU that drives the 1000, the 1500 has an improved keyboard. 



with small-sized calculator-type keys, much like those found on 
pocket calculatorrs. And, while this type of keyboard is better 
from a tactile standpoint, the experienced typist will be hindered 
by the non-standard keys. 

This mini-microcomputer, which weighs in with a mini-price 
of $79.95, has I6K of user memory standard. This feature 
means it can handle far more complex tasks than the 1000. It also 
makes the 1500 the first computer in the under-$ 100 market that 
has 16K of resident user memory. 

Mass storage for the 1500 is provided with a standard cassette 
interface. User-generated data can be stored for future use via 
this interface. 

Unlike the more limited 1000, the J 500 can have its memory 
expanded to 32K, providing more than enough user memory for 
games and limited home-computing applications. 

But hke the 7000, video output is handled via a built-in RF 
modulator that interfaces with a home television set. Both units 
are also capable of generating black-and-white graphics and 
include the plot and unplot graphics commands provided in the 
high- 1 eve] Extended BASIC language provided in the ROM, 

Another computer from Timex is the top-of-the-Une 2000 
series, that consists of two models, one priced at SI 49.95 with 
40K of user memory and the other priced at $ 1 99 , 95 with 72K of 
user memory. Both provide color graphics and feature 
sophistication not normally found in low-cost home computers. 

Physically much larger than its stablemates, the 2000 features 
a standard "QWERTY" -type keyboard with large calculator- 
type keys. The keys appear large enough so that an experienced 
typist should almost feel comfortable using it. 

Actually developed by Sinclair Research Ltd, during Great 
Britain's Prestei videotext terminal competition, the 2000 is a 
sophisticated machine with a nearly normal screen display of 
64-characters by 24-lines, or twice the capability of its stable- 
mates. 



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TABLE 1— under S500 
Manufacturer 


Model 




Price 


CPU 


Word length 


Operating System 


Languages 


Tlmex Computer 


1000 




$49.95 


Z80A 


B-bit 


N/A 


BASIC 


Radio Shack 


TRS-80 Pocket 
Computer PC-4 


$69.95 


Custom CMOS 


Not announced 


N/A 


BASIC 


Timex Computer 


1500 




$79.95 


zaoA 


B-bit 


N/A 


BASIC 


1 Radio Shack 


TRS-60 Pocket 
Computer PC-4 


$89.95 


Custom CMOS 


Not announced 


N/A 


BASIC 


Video Technology inc. 


VZ200 




$99.95 


Z80A 


8-bit 


N/A 


BASIC 


Netronics Research 


Elf II 




$99.95 


1802 


8-bit 


N/A 


machine 


Sharp Electronlos 


PC-1250 




$110 


Custom CMOS 


6-bit 


N/A 


BASIC 


Radio Shack 


TRS-80 MC-10 


$120 


6803 


8-bit 


N/A 


BASIC 


Video Technology Inc. 


VZ200 




$125 


280A 


8-bit 


N/A 


BASIC HJH 


Netronics Research 


Explorer/8J 


i 


$130 


8085 


8-bit 


N/A 


machine 


Radio Shack 


TRS-80 Pocket 
Computer PC-4 


$140 


Custom CMOS 


Not announced 


N/A 


BASIC 


Tlmex Computer 

1 


2000 




$150 ■' 


■■2S"(5A~ 


8-bit 


'N/A 


bJASIC 


Netronics Research 


Elf il 




$150 


1802 


8-bit 


N.'A 


machine 


Mattel Electronics 


Aquarius 




$150 


Z80A 


e-bft 


N/A 


BASIC, LOGO 


Video Technology Inc. 


VZ200 




$174.95 


Z80A 


8-bit 


N/A 


BASIC 


Sharp Electronics 


PC-1250 




$185 


Custom CMOS 


8-bit 


N/A 


BASiC 


Atari Products 


600XL 




S199 


6502C 


8-bit 


N/A 


BASIC , 


Sord Computer 


M5 




$199 


Z80A 


8-t3it 


N/A 


BASIC 


Multitech Electronics 


MPF-IP 




SI 99 


Z80 


8-bit 


HiA 


BASIC, FORTH 


Tlmex Computer 


2000 




S199.95 


Z80A 


8-bit 


N/A 


BASIC 


r Radio Shack 


TRS-eO Pocket 
Computer PC-2 


$19S.SS 


Custom CMOS 


5-bit 


N/A 


BASIC 


Commodore Business 

Machines 


VIC-20 




$199.95 


6502 


8-bit 


N/A 


■'lA'gTC 


Mattel Electronics 


Aquarius 




$205 


280A 


8-b(t 


N/A 


BASIC, LOGO 


Sharp Electronics 


PC-1500 




$220 


Custom CMOS 


8-bit 


N/A 


BASIC 


Netronics Research 


Etf II 




$224,45 


1802 


8-bit 


N<A 


machine 


Video Technology Inc. 


VZ200 




$224.45 


Z80A 


8-bit 


N/A 


BASIC 


Texas Instruments 


TI-99MA 




$225 


TMS9900 


16-btt 


N/A 


BASIC 


Texas Instruments 


CC-40 




$250 


7C56 


S-bit 


N/A 


BASIC 


Mattel Electronics 


Aquarius 




$265 


Z80A 


8-bit 


NA 


BASIC, LOGO 


1 Radio Shack 


TRS-80 Pocket 
Computer PC-2 


$269.90 


Custom CMOS 


8-bit 


N/A 


BASIC 


Commodore Business 
Machines 


VIC-20 




$274.95 


6502 


8-bit 


N A 


BASIC 


Panasonic Co. 


JR-200 




$279.95 


. Not announced 


Not announced Not announced 


BASIC 


Sharp Electronics 


PC-1500 




$295 


custom CMOS 


8-bit 


N/A 


baSic 


Radio Shack 


TRS-80 
Computer 


Color 


$299 


eeosE ^ 


8-bit 


N/A 


BASIC 




^^_ 


^ 




^^^ 


^^^ 


^^^^ 





Memory/Stofage 



Keyboard 



1^0 



Display 

TVoutpuy32 X 24 ca- 
pability 



Comments 

basic system 



aiCcassette iniertace 



membrane keyboard/ 

multifunlion keys 



peripheral interface 



l2-pin interface con- 
nector 



1 line 12-chiaracter liquid 

crystai display 

TV outpgt/i32 X 24 ca- 
pability 



handheld computer, basic 

model 

memory expands to 16K 



544 steps 



53 calcuiator keys, 10- 
key keypad 



16 K/cassette interface 



40 keys/multifunction/ 
rubber overlay 



peripheral interface 



1 568 steps 



53 calculator keys. lO- 
key keypad 



12-pin interface con- 
nector 



1 line i2-character liquid 

crystal display 

built-in modulator/32 x 16 
text mode/128 x 64 color 
cap. 



memory expands 



4ICcassette interface/soft- 
ware cartridges 



45 keys, 16 predetlned 
function 



baste configuratlcin 
kit 



256 bytes/ 
cassette 
interface 



hex keypad 



tvi/A 



1.7K 



54 keys, reservabte 

keys, keypad 

48 multifunction keys 1 serial port 



low-cost, handheld micro- 
computer 



24-character x 1 line liq- 

uid crystal display 

eight color output'32 x 16 entry level color computer 
text rpode/RF modulato r 
built-in modulator/32 x 



4K'cassette interface 



1 parallel 



4K/cassette interface/soft- 
ware cartridges 



45 keys, 16 predotinad 
function 



text mode/128 x 64 color 

capability. 

"RTa ' 



16 parallel printer port 



256 bytes/cassette inter- 
face 



N/A 



N/A 



basic Explorer/85 building 
block system 



1568 steps/cassette inter- 
face ^ 

40K.''cassette interface/ 
software cartrige slot 



53 calculator keys, 10- 
key keypad 



12- pin interface con- 
nector 



cassette inlerface 



42 keys/'muiti- ~ 

function/rubber overlay 
keyboard 



peripheral interface 



1 line 12-character liquid 

crystal display 

color output/'25e X 192 ca- basic system 
pability/64 x 24 text mode 



256 bytes/cassette inter- 
face 



hex keypad 



IM/A 



assemOted 



4K/cassette interface 



49 keys 



1 serial, peripheral inter- 
face 



320 X 192 graphics/40 x basic system 

24 text/user option 

built-in modutator/32 x 16 cassette recorder 



4K/cassette recorder/soft- 
ware cartridges 



45 keys, 16 predefined 
function 



1 parallel 



54 keys, reservable 

keys, keypad 

62 keys, help key, 4 1 serial, 2 controller, ex- 



text mode/128 
capability. 



X 64 color 



5.7K 



24-character x 1 line liq* 

uid crystal display 

built-in video output sup- 
ports 256 colors, 40 x 24 
text 



memory increases 4K 
basic system 



leiVcartiidge slot 



special function 



pansion connector 



20K''cassette 

4K'cassette interface 



5 4 keys 
4&-key 



Not announced 
peripheral connector 



Home television 
20 -digit, l-line alpha- 
numeric display 



basic system 



72K,'cass8t1e interface/ 
software cartridges 



42 keys/muitifunction/ peripheral interface 
rubber overlay keyboard 
-= , r ke 



65 calculator keys, 19- 
key pad, 18 definable 



60-pin bus connector 



color output'256 X 192 ca- internal memory expanded to 
pability/64 x 24 text mode 72K 



1 line 7 X 156 dot matrix 
liquid crystal display 

color capability 



pocket computer 



2640 bytes 



5K/cassette interface 



66 keys, 4 user- 
proqrammable 



basic system 



320 X 192 graphics/40 X 
24 text 

26-character x 1 line liq- 
uid crystal display 

homeTV 



4K/cassette recorder 



49 keys 



1 serial, peripheral inter- 
face 



65 keys, 10- key keypad. 

function keys 

hex key pad 



cassette fecorder 
basic system 



2.6K 



1 serial, 2 parallel 



256 bytes cassette inter- 
face 



expansion board wilh ports. 
RF modulalQf 



20K''cassette recorder/soft- 
ware cartridges 



45 keys, 16 predefined 
function 



1 parallel 



built-in modulator/32 x 16 
text mode/128 x 64 color 
capacity 



1 memory expansion module 
brings RAiyi to 20K 



l6K/cassette interface 



standard 



16 colors 



basic system 



1 line liquid hand-held computer 



SK'software cartridges 



standard layout 



31 -character x 
crystal display 



4K/cassette recorder 



49 keys 



system expander with 
cartridge/memory 
ports/1 serial 



320 X f92 graphics/40 x 
24 text 



system expander. 2K memory' 
added 



4K 



65 calculator keys, 19- 
key keypad, 18 defina- 

JiiS 



60 pin bus connector 



1 line 7 x 156 dot matrix 
liquid crystal display 



memory expanded lo 4K 



SK'cassette recorder 



66 keys, 4 user- 
programmable 



color capability 



digital cassette recorefer 



32iC'cassette interface 



60 keys, multifunction 1 parallel 



RGB/composite video out- basic system 
put/CRT is user option 



6.6K 


65 keys, 10-key keypad, 
function keys 


26-character >; 1 line liq- user memory 
uid crystal display expanded 4K 


l6K'cassette interface 


53 keys 1 serial 


CRT is user opt/32 x 16 basic system 
color text mode/256 x 192 
graphics capability 


B 



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^^^H 


TABLE 1 under S500 {continued^ 
Manufacturer Model 


Price 


CPU 


Word Length 


Operating System 


Languages 




Spectravideo 


SV-318 


S299 


zaoA 


a-bit 


N/A 


BASIC 


■1 


Atari Products 

i 


600XL 


$259 


6502C 


8-bit 


N^ 


BASiC 




Spectravideo 


SV-318 


S299 


Z80A 


8-bit 


HIA 


BASIC 


m 


Commodore Business 
Machines 


VlC-20 


$324.90 


6502 


8-bit 


N.A 


BASIC 




Netronlcs Research 


Elf II 


S339.40 


1802 


8-bit 


H/k 


machine 




Panasonic Co. 


jn-200 


5340 


Not announced 


Not announced 


Not announced 


BASIC 




NEC Home Electronics 


PC-6000 


$349.95 


Z80A-compaIible 


8-bi( 


N/A 


BASIC 


41 


Sharp Electronics 


PC-1500 


$370 


custom CMua 


g-b'it 


NM 


BASIC 




Panasonic Co. 


H1400 


$5S0 


5502 


a-bit 


SNAP (version 
of FORTH) 


BASIC 




fladio Shack 


TRS-SO Color 
Computer 


S59'9" 


6309E 


8-bit 


""N/A 


BASIC 




Multitech Electronics 


MPP-ll 


$399 


6502 


8-bit 


N/A 


BASIC 




Netronics Research 


Explorer/88-PC 


$599.95 


308S 


16-bit 


N/A 


machine 




Texas Instruments 


CC-40 


S400 


7C20 


&-bit 


N/A 


BASIC 




Unitronics 
f 


Sonic 


$400 
(est.) 


6502 


8-bit 


N/A 


BASIC 




Unitronics 


Sonic 


$4bti 
(est.) 


6502 


3-bH 


N/A 


BASIC 




Commodore Business 
Machines 


VIC-20 


S404.85 


6E02 


S-bit 


N/A 


ASIC 




Sord Computer 


MS 


$4^1 


Z80A 


6-bit 


N/A 


Basic 




Video Technology Inc. 


VZ200 


$424.95 


280A 


8-btt 


N/A 


BASIC 




Texas instruments 


TI-99/4A 


$425 


TNflS9900 


16-bit 


N/A 


BASIC 




Panasonic Co. 


JR-200 


S430 


Not announced 


Not announced 


Not announced 


BASIC 




NEC Home Electronics 


PC-6000 


$450 


Z80A-compatible 


8-bit 


N/A 


BASIC 


1 


Netronics Research 


Elf II 


$454,40 


1802 


8-bit 


N'A 


machine 




Radio Shaclt 


TRS-80 Pocket 
Computer PC-2 


$480 


Custom CMOS 


8-bit 


N,A 


BASIC 


i 


Panasonic Co. 


HI 800 


$480 


6502 


8-bit 


SNAP (version 
of FORTH) 


BASIC 




Spectravideo 


SV-318 


$490 


zeoA 


8-bit 


N/A 


BASIC 




Atari Products 


1200XL 


$499 


6502 


8-bit 


N/A 


BASIC 




Netronics Research 


Explorer/85 


$499.75 


8085 


8-bit 


N/A 


machine 




Panasonic Co. 


JR-800 


3499,95 


Not announced 


Not announcec 


i N A 


BASIC 




* 







r 

Memory/storage 


Keyboard 


I/O 


Display 


Comments ^^^| 


i 


16K/eassette interface 


71 keys, 10 program- 
mable, built-in joystick 




256 X 192 resolution, 16 
colors, television used as 
display 


basic system ^^^H 




16K cassette recorder^car- 
tridge slot 


62 keys, help key, 4 
special function 


1 serial, 2 controller, ex- 
pansion connector 


built-in video output sup- 
ports 256 colors, 40 x 24 
text 


cassette recorder ^^^H 


i 


leK'cassette recorder/car- 
tridge slot 


standard layout, 

function 

keys 




256 X 192/16 colors 


■ 




13K-'cassette recorder 


66 keys, 4 user- 
programmable 




color capability 


user memor>' ^H 
expanded ^H 
8K ^^M 


1 


4K/cassette interface 


tiex keypad 


1 serial, 2 parallel 


fiomeTV 


user memory j^^^M 
expanded ^^^^H 
to4K ^^B 




3aK/cassette interlace 


bu Keys, mumtundion 


1 parallel, 1 serial 


HGB.'composite video 
output/ CRT is 
user option 


serial port ^M 


1 


16K/c^e«errilerfacr ' 


71 (fgys, 5'rfiultifunction 


1 parallel, 2 game (xin^ 
troller ports 


256 X 192 capability, 32 
X 16 text, composite video 
output avail. 


basic system |^^^| 




10.6K 


65 Iteys, 10-key keypad, 
function keys 




26-character x 1 line liq- 
uid crystal display 


user memory expanded by ^^^^| 




4K 


65 calculator keys in 
typewriter arrangement, 
redefinabie 




Mine X 26-ctiaracter liq- 
uid crystal display 


basichand-heldcomputer ^H 


I 


16K/cassette interface 


53 keys 


1 serial 


CRT is user opt/32 x 16 
color text mode/256 x 192 
graphics capability 


extended BASIC ^^^H 




64K/cassette interlace 


52 keys 


1 parallel, i game con- 
troller 


supports 40 X 24 text/6 
colors/ 180 X 192 res./ 
user option 


basic system ^M 




64K'cassette interface 


N/A 


1 serial 


N/A 


starter kit ^M 


m 
II 


22K/softwarB cartridges 


standard layout 




31 -character x 1 line liquid 
crystal display 


user memory upgraded lo ^H 
22K H 




80K'148Kwafertape 


70 keys, 10 function 


expansion ports, game 
controller 


16 colors, 40 column ca- 
pability 


basic Sonic home computer _^^M 
system, includes stringy-flop- il^H 
PV mass storaae ^^^H 




112IC148K vraltertape 


70 keys, 10 function 


expansion ports, game 
controller 


16 colors, 40 column ca- 
pability 


32K memory added ^^^^m 




29K/cassette recorder 


66 keys, 4 user- 
proqrammabie 




color capability 


user memory expanded to ^^^H 
2dK "^^1 




20K/cassette/cartridges 


54 keys 


Not announced 


Home television 


BASIC home finance soft- 'S 
ware, joysticks, games added ^M 




64K/cassette recorder/soft- 
ware cartridges 


45 keys, 16 predefined 
function 


1 parallel 


built- in modulator/32 x 16 
text mode/128 x 64 color 
capacity 


44K memory added ^^^f 


1 


16K/wafertape 


standard 


HEX-BUS expansion 
unit 


16 colors 


Wafertape drive ^M 
used in place ^M 
of cassette ^^M 




32K'cassette recorder 


60 keys, multifunction 


1 parallel, 1 serial 


RGB/composite video out- 
out/CRT is user oDtion 


cassette recorder ^^^H 


i 


16K/cassette recorder 


71 keys, 5 multifunction 


1 parallel, 2 game con- 
troller ports 


256 X 192 capability, 32 
X 16 text, composite video 
outDut available 


cassette recorder ^^^H 




16K.'cassette interface 


tiex keypad 


1 serial, 2 parallel 


home TV 


user memory expanded to ^H 
16K ^H 




16K 


65 calculator keys, 19- 
key keypad. 18 defina- 
ble 


60 pin bus Mnnector 


1 line? X 156 dot matrix 
liquid crystal display 


memory expanded to 16K ^H 


fc 


8K 


65 calculator keys in 
typewriter arrangement, 
_ redefinabie 




Mine X 26-character liq- 
uid crystal display 


basic system ^^^| 




4648K/cassette recorder 


71 keys, 10 program- 
mable, built-in joystick 




256 X 192 resolution, 16 
OJlors, television used as 
disDiav 


cassette nscorder added (or H 
Storage, user memory up- ^M 
graded to 48K ^M 




64Kj'cassette recorder 


standard typewriter/16 
special function 


1 printer, 2 controller, ex- 
pansion connector 


built-in video output sup- 
ports 256 colors. 40 x 24 
text 


basic 1200 system/no std. ^^^H 
CRT ^^H 




256 bytes/cassette inter- 
face 


56 keys 


N/A 


12-inch monochrome CRT 


expansion board, keyboard. IB 
CfiT ^ 




16K'cassette interface 


47 keys, 20-key keypad, 
10 programmable 


parallel 


8-line x 32-character LCD 


notebook computer with o 
ROM- based software o 


ft XI 







— I 
LLI 



Another feature not norrnally found on home computers in 
this price category is included: memory bank-switching. Using 
this technique, the microcomputer is fooled into thinking it can 
address more memory than it normally can. In rcaiity , the Z80A 
can still only directly address 64K, but bank-switching allows it 
to address much more. 

The 2000-series can display a range of eight colors and allows 
separate control of foreground, background , and border areas. 
Resolution is fairly high with 256- by 192-dots (horizontal by 
vertical). All pixels (picture elements) are individually address- 
able by the user, which means the video output is memory 
mapped, with specific memory addresses provided for each 
pixel. 

Like other members of the Timex Sinclair family, mass 
storage is via cassette interface to a cassette recorder. 

Radio Shack 

Competing heavUy in the under-$100 market is Radio Shack 
with its $69.95 Pocket Computer PC-4, one of this manufactur- 
er's series of handheld pocket computers that is driven by a 
custom CMOS VLSI microprocessor. 

The miniscule PC-4 reaches its fullest configuration in this 
pricing category with maximum memory expansion and all 
peripheral accessories. It features a 544-step user memory that 
can be expanded to 1568 steps with the plug- in memory expan- 
sion module. 

Featuring a one-line, 12-character LCD readout, this tiny 
microcomputer is programmable in BASIC and can handle 
strings of up to 30 characters in length. 

Using a "QWERTY" keyboard layout, you can use the 53 
keys for text or program input. In fact, 1 5 BASIC programming 
functions can be entered with two keystrokes. While the key- 
board does have the traditional layout , it should be noted that the 
keys are actually calculator-type keys and the close placement 
really won't allow touch typing. A separate keypad allows 
numeric entry. Total system expansion is achieved in this price 
range. This includes the IK RAM moduie and cassette-recorder 
interface and tiny thermal printer with a total price of $140. 

Radio Shack has many other entries in the under-$500 cate- 
gory. These microcomputers include a variety of handheld and 
small keyboard-computers. 

While Radio Shack's bottom-of-the-line handheld 
microcomputer is the PC-4, its bigger brother is the recendy 
introduced PC-3 that sports a 1.4K nonexpandable memory. 
The $99.95 unit, like its stablemates, features a one-line LCD 
readout and it features a standard keyboard layout. Like its 
stablemates, it uses tiny calculator-type keys that aren't suited 
for speedy text entry. 

The PC^, driven by a CMOS 8-bit microprocessor, reaches 
its full configuration in this price category with the addition of a 



printerfcassette interface, ITiis boosts the price to roughly 3 

While the PC-1 has been discontinued since last year, the 
PC-2 , manufactured for Radio Shack by Sharp, is still available 
and represents Radio Shacks's top-of-the-line handheld. 
Offered at a base price of $199.95, it reaches its fullest con- 
figuration in the $500 to $1000 price category. 

A versatile unit, its basic user memory is 2.6K. This memory, 
however, is expandable to a maximum of 16K, with the addition 
of the proper memory modules. It will also accept ROM mod- 
ules, but the limit is still 16K. This expandability makes this unit 
a powerful, flexible handheld microcomputer. 

Programmable in Extended BASIC, the PC-2 features 42 
statements and 34 built-in functions, It allows a user to have 
two-dimensional arrays, variable-length character strings with 
extensive string handling, formatted printing, and other fea- 
tures. 

The display is a 26-character by 1-line dot matrix LCD with 
user-addressable graphics over its complete range. The key- 
board is a fiill "QWERTY" type, with 65 keys and a separate 
number pad. There are also six user-definable keys. 

Like the others in the Radio Shack handheld line, the PC-2 
uses tiny caiculator-type keys that are better suited to single- 
finger use, rather than two-handed touch typing. Another fea- 
ture that might prove somewhat confusing is the placement of 
the space bar next to the function entry key. The layout, though, 
is about as clean as one could hope for in a small unit. 

Driven by an 8-bit, low-power CMOS microprocessor, the 
PC-2 is powered by 4 " AA" batteries. A 60-pin expansion port 
allows interfacing with a variety of peripherals, including a 
color- printer/dual -cassette interface {valuable for speedier pro- 
gram storage and retrieval) and an RS-232C interface for tying 
into such data networks as The Source or CompuServe via a 
phone line. 

Altogether, the PC-2 is a powerful handheld unit. However, 
this isn't the only Radio Shack offering in this pricing category. 
Radio Shack also offers two Color Computers, the new MC-10 
Micro Color Computer and the more traditional TRS-SO Color 
Computer. 

The MC-IO is a tiny unit, about the size of the Timex 3000. 
However, instead of using a membrane keyboard. Radio Shack 
has opted for a more standard set of small calculator- type keys in 
a standard keyboard format. The multi- function keys dlow 
quick two-key entry of program commands. A learning ma- 
chine, the MC-10 comes with a tutorial manual that describes 
how to produce 8-coior graphics and teaches a user BASIC 
programming. 

The 4K memory of the MC-10 is expandable to 20K through 
an expansion connector on the tiny box. Unlike other low-cost 
microcomputers, the MC-10 has a built-in serial interface that 
allows the user to connect either a modem or printer to the unit. 
With either of these peripherals attached, the user gains flexibil- 
ity in output format. In fact, with a modem the user will gain 
access to such services as The Source or CompuServe. 

This year, only the 16K-vcrsion of the more-powerful 
$299,95 TRS-80 Color Computer is available rather than the 
4K-version that was available last year. 

Driven by an §-bit 6809E microprocessor, the Color Compu- 
ter interfaces directly with a color-television set as a display 
device through a built-in RF modulator. 

An even more powerful version, capable of programming in 
Extended BASIC, is available for $399,95, This version of the 
Color Computer allows multi-character variable names and 
string arrays of up to 255 characters; full-featured editing, 
floating point 9-digit accuracy, trigonometric functions, user 
definable keys, specific error messages and PEEK, POKE and 
USR commands to call machine-language routines. 

This machine is a good basic home system, capable of per* 
sonal computer power or videogame entertainment. It is a flex- 
ible unit. There is a wide variety of prepackaged programs 
available for it on cassette and it includes a standard serial 
interface port for using a modem to tie into one of the many 
information services available. 



"I built this 16-bit computer and 
saved money. Learned a lot, too." 



Save now by building the Heathkit H-100 
yourself. Save later because your computer 
investment won't become obsolete for 
many years to come. 

Save by building it yourself. You can save hundreds of 
dollars over assembled prices when you choose the new 
H-100 16-Bit/8-Bit Computer Kit - money you can use 
to buy the peripherals and software of your choice. 



H-100 SERIES COMPUTER SPECIFICATIONS: 


USER MEMORY: 


MaiJMerge 


192K-768K bytes* 


Data Base Manager 


MICROPROCESSORS; 


File Manager 


16-bit: 8088 


General Ledger 


8-bit; 8035 


Accounts Receivable 




Accounts Payable 


DISK STORAGE: 


Inventory Control 


5.25" disk drive. 


Sales Invoicing 


8"dtsl<driwc 


Lotus 1,2.3 


Winctiester drive 


Peach Text 5000 


KEYBOARD: 


Fortran-86 


Typewriter style, 95 keys. 


Cobol-86 


l3tunction l(eys. 


Pascal 


18-kcy numeric pad 


Basic Compiler 


GRAPHICS: 


Most standard 


Always in graptiics mode. 


8-bit CPM 
Software 


640ri;225w resolution; up to 


eight colors are available" 


Jtak ' 


COMMUNICATIONS: 


Two RS-232C Serial 




Interface Ports and 
one parallel port 


4Bl 


DIAGNOSTICS: 


vU9^ 


Memory self -test 


••^1^^ 


on power-up 


n^^ ^ 


AVAILABLE SOFTWARE: A 


Sl^^lv^^'^ ^ 


Z-DOS (MS-DOS) M 


^^H|B^B|^^^ 


CP/M' ^ 


^^^^^^^^^^^^^^B 


Z-BASIC Language 


'^ — • ' 


Microsoft BASIC 


"■^^•^^^^^^^^ 


Muttiplan ^^ 


^^^*s 


SuperCalc ^^^ 




WordStar ^HL 





The H-100 is easy to buifd - the step-by-step Heathkit 
manual shows you how. And every step of the way, you 
have our pledge- "We won't let you fail." Help is as close 
as your phone, or the nearest Heathkit Electronic Center"' 

And what better way to learn state-of-the-art computing 
techniques than to build the world's only 16-bit/8-b(t 
computer kit? To run today's higher-speed, higher-per- 
formance 16-bit software, you need an H-100, It makes 
a big difference by processing more data faster 

Dual microprocessors for power and compatibility. The 
H-100 handles both high-performance 16-bit software 
and most current Heath/Zenith 8-bit software. 

Want room to grow? The H-100's standard 192K byte 
Random Access f^/lemory complement can be expanded 
to 768K bytes - compared to a 64K standard for many 
desktop computers. 

And the industry-standard S-100 card slots support 
memory expansion and additional peripheral devices, 
allowing your investment to grow. 

High-capacity disk storage, too. The H-100's 5.25" floppy 
disk drive can store 320K bytes on a single disk. The 
computer also supports an optional second 5.25" and 
external 8" floppy disk drives. For maximum storage, an 
optional internal Winchester disk drive is also available. 

For more information, circle the reader service number 
below. Better yet, visit your Heathkit Electronic Center 
for a demonstration! 



The H-100 gives me 
the most for my 
computer dolfar! I 



■192K Oytes standard. 

'^Oplionai. 
CP/M is a registered 
trademark at Digital 
Research, 



mKOSi'lES:- 




Heathkit 



AsMbdcJiafy o f Zenith Radio Corpor' 



Heathhit ElectronicCentersareunit^OfVeritechnology Electronics Corporalion. 
CmCLE 37 ON FREE INFORMATION CARD 



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^ — bhatact^ts per toch.. i. 

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The Coldf 

32K, with the addition of a RAM expansion kit. An already 
expanded version is available for $549,95 ajid it features the 
same functions already described. 

For the user who would like the ultimate in flexibility and 
speedy mass storage, there is an optional external disk drive 
available. The Color Computer can support up to four of these 
drives and this gives the user far more flexibility in this system 
than in other low-end systems. However, the buyer should note 
that even one drive will sigtiificantly raise the cost of the system. 

The Color Computer's expansion possibilities are outlined in 
subsequent sections and you will find it becomes a full-blown 
system in the $1500 price range. 

Handheld microcomputers continue to abound in the low -end 
price range, with offerings from Sharp, Hewlett-Packard, and 
Panasonic. 

Sharp 

For instance. Sharp offers two handhelds, the PC-1250 and 
the PC-J500. The PC-150O is identical to Radio Shack's PC-2, 
so its description will suffice for the 7500, except to say that it is 
more expensive than the Radio Shack unit, with a base price of 
$220, Both of these handhelds become fully configured ia 
higher price categories. 

The basic model, the PC-1250, is available for $185. It is 
driven by a CMOS 8-bit microprocessor, which means that it 
can be run by battery power beiause the current drain is low. 

Progranmiable in BASIC, its 54-kcy small calculator- type 
keys are arranged in a "QWERTY" layout. However, since the 
unit is handheld, it isn't suited to fast touch-typing. The PC- 
1250 has a one-line by 24-character LCD readout, 

Panasonic 

Another of the entrants in the handheld computer field is 
Panasonic, whose H1400IH1800-s&nt% builds into a portable 
briefcase system. In reality, this scries uses the same handheld 
case, but each pricing level reflects more user memory. For 
instance, the %3%QH14Q0 features 4K of user memory, while the 
$480 mSOO features 8K of user memory. 

If you look closely at the accompanying table, you will see an 
operating system is noted. Unlike other handheld computers, 
which operate with machine language instmction sets, the 
H1400/J800 series uses the SNAP operating system, a de- 
rivative of FORTH. Under this operating system, BASIC is the 
programming language. 

Again, like other handheld computers, the keyboard is laid 
out in a standard ' 'QWERTY' ' fasluon, however, with 65 small 
calculator-type keys and narrow spacing on the keyboard, it 





A 



uSmpuUBP 



/j 



Under 



would seem that this type of layout wouldn't lend itself to 
touch-typing. Instead, it seems more oriented toward one-finger 
entry. To give these units their due, though, they are larger than 
other handheld units on the market. 

Notice that they are on the upper end of the pricing scale. 
Although they are less expensive than they were last year, all it 
takes is a bit of added memory — expansion RAM modutes are 
available — to push them into the next price class, where you will 
again see them mentioned. 

These aren't the only Panasonic units available in the under- 
$500 category. Another is the recently introduced $279.95 
JR-200. It is a complete keyboard-computer and feamres a 
built-in AC power supply, a built-in RF modulator, buih-in 
cassette interface port, and game-contioller connections. Unlike 
other low-priced units, this one includes a standard printer 
interface port. Other systems in this price range usually make 
additional ports for communications or printers extra-cost add- 
ons. 

With 32K of RAM, this unit is capable of handling some 
fairly sophisticated programs. Its programming language is 
BASIC, whose commands and other textual matter are inserted 
through the 60 multifunction small calculator-type keys. One of 
the nicer features of this keyboard is its standard key spacing that 
should make quick data entry easy. 

The JR-200 is also a color home computer that can interface 
not only with a home television set, but also with a monitor with 
either composite video or RGB inputs. It is capable of generat- 
ing eight colors simultaneously and — for music composition or 
sound effects — three simultaneous tones in five octaves. Mass 
storage is through the cassette interface and Panasonic has an 
interesting option, a 2400-baud data cassette recorder that al- 
lows faster data storage and retrieval via cassette. 

Rounding out Panasonic's entries in this field is one of the 
new breed of lap computers now making their way to the market, 
ThcJR-800, that weighs a mere IVs pounds and which fits easily 
into a briefcase, is priced at $499.95, For that price, the user 
receives a powerful piece of equipment. 

Initially equipped with 16K of user memory, or enough to 
perform complex tasks and to store a good deal of information, 
the memory is expandable to 24 or 32K, or as much RAM as 
some much larger machines had only a few years ago. No 
pricing was provided on this expandable feature. 

Featuring a full travel standard layout typewriter keyboard, 
the JR-800 also has 20 programmable function keys and an 
independent numeric keypad. The programmable keys can be 
programmed to carry out often-used commands to help simplify 
and speed up the computing process. 

Like other lap computers, the JR-800 has taken advantage of 
advances in liquid-crystal-display technology and sports a 32- 
character by 8-line LCD, The display can be scrolled through 
255 columns and contrast control is provided so the display can 
be adjusted for easy viewing in a variety of fighting conditions. 



O 
m 
m 
J} 

s 

87 



Memory protection is provided so that any data or program- 
ming material thai has been stored in RAM will be saved even if 
the power is turned off, 

liie BASIC programming language this unit uses is located in 
ROM for quick loading and 5 1 BASIC commands are provided 
on the keyboard, as well as 64 graphic symbols and 32 user- 
de finable keys, 

Texas Instruments 

Since last year's supplement was published, there has been a 
tremendous price war going on in the low-cost home-computer 
field and the semiconductor giant, Texas Instruments, has been 
among those companies battling it out with its TI-99/4A, the 
only low-cost home computer to use a true 16-bit micro- 
processor, TMS-9900. In fact, Tl was the first manufacturer on 
the market with a 1 6-bit CPU when the model was introduced 
three years ago. Although you might find the manufacturer's 
suggested retail list price somewhat shocking, in view of the 
heavy price discounting and rebate programs that have gone on, 
it is $225. 

However, the user gets a machine with a typewriter-style 
keyboard and immediate availability to TI's wide library of 
prepackaged software. This software is immediately usable 
thanks to the Tl-99f4A's 16K user memory. 

Programmable in BASIC, a user can use a built-in cassette 
interface for data storage. Disk drives are available, but they 
push its cost up to other pricing categories. 

The T1-99I4A is capable of generating up to 16 colors and 
interfaces with a television set through a buiit-in RF modulator. 
It can also use a color monitor, as will be shown in other pricing 
categories. 

This isn't the only Tl entrant in this pricing category. The 
company is also mariieting its Compact Computer 40, a hand- 
held unit with a base price of $249.95. It interfaces with a wide 
variety of peripherals. 

Driven by a low-power CMOS 8-bJt microprocessor, the 
CC'40 comes equipped with 6K of user memory. Its standard 
keyboard layout allows entry of BASIC commands and text, 
although its display is only a 1 -line by 32-character LCD. Mass 
storage is via TI's proprietary Waferrape drive system. In other 
circles, this type of tape system might be called a "stringy" 
floppy drive. 

Wafertape is actually a continuous-loop cassette tape system 
that allows quick data entry and retrieval. This is similar to the 
endless tape loops used in telephone answering machines. 

If you look closely at the accompanying table, you will find 
this system mentioned twice because it starts its upgrading 
within this price segment with the addition of a serial input/ 
output port. 

The TI-99/4A also begins upgrading and its price rises to $425 
with the addition of the Wafertape drive, in place of a standard 
cassette recorder. 

Video Technology 

A newcomer to the home-computer wars. Video Technology 
is offering a key board -computer, the VZ200, whose pricing 
starts at $99.95. For this price, a user gets a Z80A 8-bit micro- 
processor, one of the 8-bil worid's standards, but only 4K of 
user memory, which is enough for simple tasks and home 



%^ 



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COMMODORE'S VIC-SO Is s BASIG-programmable machine. 



THE ELF II from Mronlcs It one of the otcfest computer kits avallebit. 

games, but isn't really enough for complicated tasks. In fact, if 
you watch how the system upgrades, you will notice the first 
expansion is to increase the amount of user memory, which is 
accomplished before it reaches the $500 to $1000 pricing cate- 
gory. 

Fully programmable in BASIC, the VZ200 features a standard 
keyboard layout with small calculator-type keys. These multi- 
function keys allow one-key entry of BASIC commands and 
speed up programming. 

The VZ2Q0 features a built-in cassette interface for data stor- 
age. In the next pricing level the manufacturer's proprietary data 
cassette recorder is added to the system configuration. (You will 
notice the same thing happening with many of the home- 
computer systems listed. In a departure from last year, we have 
included the proprietary cassette recorder in the pricing equa* 
tion,) 

The unit is also capable of a video output of 32-characters by 
I6-lines in its 9-colortext mode. Low-resolution graphics of 64- 
by 32-dots aie available in 9 colors, although a higher resolution 
of 1 28- by 64-dots is available in eight colors. 

An interesting feature of the VZ200 is its dedicated video 
RAM. The manufacmrers have set aside 2K of user memory, 
roughly two pages of text, for video memory. This assures that 
display input won't be overwritten should the user-memory area 
become full. The unit is also capable of interfacing with a home 
television set (through an RF modulator) or a dedicated monitor. 

In this pricing category, according to the manufacturer's 
released prices, the VZ200 gains a printer port, memory expan- 
sion and peripheral expansion bus, and this just about exhausts 
the list of possibilities because other planned peripheral prices 
weren't available at press time. 

Mattel Electronics 

Making its first formal foray into the home-computer field, 
Mattel Electronics has introduced the $150 Aquarius system. (It 
has an add-on computer module for its Intellivision game con- 
troller, but this is its first formal home computer.) 

Driven by an 8-bit Z80A microprocessor, the^^Kanjwcomes 
with only 4K of user memory. Eventually, the company plans 
total user memory capability of 52K. 

Another of the keyboard-computers available, the Aquarius 
has a 49-key small calculator-type of keyboard. Its basic 
measurements are 13 by 6 inches and its is capable of 256 
graphics characters, as well as 16 colors. 

Capable of interfacing with a cassette recorder for mass 
storage, software is available not only on tape, but also in the 
form of plug-in cartridges. Programming languages include 
BASIC and the educationally-oriented LOGO. 

In its two expansions in this pricing category , one will find the 
cassette recorder and the expansion bus have been added. 



inTRODUcincs 

affarcJatJie cez 

tf-MM fTg u^^ Uon.therobc 

most sopnisTicated it wm also sf 

microprocessor- fences, uslns 

controlled device Remarkal 

since the 
microcomputer. 



etEcrncmicsl 



HEROIisacompletelv 
self-contained, electro- 
mechanical robotcGpa- 
ble of Jnteracfing wifh 
its environmenf. Con- 
trolled by on on-board. 
programmable com- i 

puter, if has electronic 
sensors to detect llgtit, sound, mo- 
tion and obstruction in its path. 

Capable of seven axes of mo- 



tion, the robot can be programmed 
to pick up small objects wltti its arm. 
If will also speait in complete sen- 
fences, using its voice synffiesizer 
Remarkable though the robot is, 
its companion Robo- 
tics Education Course 
is an even more signifi- 
cant "first." It provides 
afhorougti under- 
standing of robot tecti- 
nologies, including 
robotics programming. 
Course features self-test 
unit reviews, experi- 
ments and final exam. 
Designea to oe used witti 
HERO 1,this 1200 page course isftie 
most complete introduction to 
robotics available today. 




Heath 

Heathkit/Zenith 
icational System^sn 



HER0 1 is a computer on wheels. 

HER0 1 uses a 6808 microprocessor 
ttiaf controls 13 (unctions and sense 
boards. Its on-board processor 
con take it ftirougti complex ma- 
neuvers. Ttie programming proc- 
ess is straighttorward witti provision 
for step-by-step debugging, en- 
tiancement and ottier corfections. 

HER0 1 senses Include: sound de- 
tection (frequency range 200- 
5000 Hz): I ig hit detection; ultrasonic 
ranging; ultrasonic motion detec- 
tion; speecti synttiesis; and real 
time, four year calendar clock. 

A completely mobile platform 
robot, HERO 1's motion abilities per- 
mit head rotation and arm rotation 
of 350, shoulder rotation of 150, 
arm extension of 5 inches, wrist 
pivot ot 180' and wrist rotation of 
350: Gripper will open to a max- 
imum of 3V2 inches and rotate 90 
at extreme extension. Poyioad ca- 
pacity of arm is 8 oz. at maximum 
extension and 16 oz. of normal. 

The remarkable HER0 1 robot is in 
production now, ready for you. Buy 
assembled or build it from a kit. Kit 
price is $1500 and the assembled 
robot is $2500, FOB Benton Harbor, 
or through your nearest Heathkit 
Electronic Center 

For full information on HERO 1 
call 800-253-0570 toll-free. (In 
Alaska, Hawaii and Michigan, call 
616-982-3411.) We'il give you the 
address of the nearest Heathkit 
Electronic Center and send you a 
booklet that gives details about 
the robot, the content of this 
course, and other information. 



PI ease send detai Is on the HER0 1 robot 
and robotics course. 

Mail to: Heath Company, Dept. 020-1 08 
Benton Harbor, Ml 49022 



Heolhkit/Zenllh Educalicxial Systems is Q division of Heoth Compony. 
Eenlcn Harbor. Mictiigan 49022. RO-iOOARi 



HeathkH Electronic Centers are units ot Verttechnology Eleciionits CoiporaSiDn. 
Heath Company i& a subsidiary ot Zenith Radia Corpoiation. 

CIRCLE 16 ON I^REEINFORIJtATION CARD 



nEnoTccn 



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92 



The Complete Range 

Fifteen months ago Memotech developed the first 64K Memopak, designed to maximise the capabilities of the Sinclair 

ZX81 . Since then, using the ZX81 as a starting point, we've gone on to produce a comprehensive range of Memopaks, 

adding 16K and 32K memory expansions, utilities packages comprising a Word Processor, Z80 Assembler and 

Spreadsheet Analysis, plus Communication Interfaces, High Resolution Graphics and a professional quality Keyboard. 

To complete our range oi Timex add-ons, we are now introducing the MEMOPAK RS23Z Serial Interface. 



RS232 Interface 

Th* HS232 ;s an all-puipose tntfrilace 
whicb allows ihe TimcK tioi only lo 
au(pLil lo suilable serial pnnl«rs, bul 
C4n link up wiih numeroui types oi 
peripheral or even olKer procAssors. 
The lnl«rldce has twD m^in modes of 
op^raEEon: &AS[C mode allows you lo 
use Ihe r*nqe ai iunciions Aijpplt«d in 
the HS232 EPROM wiihin an ordiniry 
BASIC program, and TERMJNAL mode 
allows you to mm your Timex as a. 
terminal to anoilier procassoi. 
The EPROM lunctions oliored permit 
Ilia user Ic leiid, receive and convert 
byles hetwefln Z30 code and ASCII, as 
well as chfrck the status of numerous 
conlrol flags- Received or tranjimiltad 
data can appiear simullaneously on ihe 
screen, and received data may be 
printed simullAneously. 

$99.95 cable $19.95 

Memopak Centronics 
I/F 

The BASIC commands LPBIKT< 
LLIST and COPY aie used lo print on 
any CENTRONICS type printer AH 
ASCII chaiacters are generated and 
lianslation lakes place automalically 
wilh;Ti the p^ck. Reverse capitals give 
lower case- Additional Ucilities &llow 
high resolulion printing. 

$74.95 cable $19.95 
Memopak HRG 

This pack breaks down ihe constraints 
imposed by operating at the Z60 
character level and allows high 
dalmition displays to be generated. All 
246 X 192 individual pixels can be 
conlioUed using simple commands^ and 
the built in sollware enables the user lo 
work interactively al the dot, line, 
character, block and page levels. 

Memocalc 

The scieen display behaves as a 
'window' on a large sheet cE paper on 
which a table ol numbers is laid out- 
The maximum sue ol the lable is 
determined by the memory capacity, 
and with a Memopak G4K a table oi up 
lo 7000 numbeis with up to 250 row» or 
99 columns can he specified, 



Memotext 

Texl IS hret arranged in 32 character 
lines for ihe screen with comprehensive 
editing facilities. On output the user 
simply chooses the line length required 
lor printing and the system does the 
rest. Used with the Memopak 
Centronics Interface, the Word 
Processor makes available printout with 
SO character lines, upper and lower 
case and single and double size 
characters. 

$49.95 

Memopak 

Memory 

Extensions 

For those just setting 
out on the road to real 
computing, these packs 
Iranslorm the Timex Irom 
a toy to a paweriul computer. 
Data storage, extended program- 
ming and cotnplex displayi all become 
feasible. Further details available on request 

i6K Memopak S43.95 
32K Memopak 599.35 
64K Memopak $149 95 



Z80 Assembler 




The Ajtsembler allows 
you first lo code and 
edit a source program in 
the ZSO language, and 
then assemble it into 
machine code. You can 
now write jle?:jble and 
economic programs. 
The Editor mode 
allows you to code 
directly in the right 
format, manipulate 
inidividtial lines and 
control the exact placing 
of source and machine 
code. Routines may be 
merged or listed {even 
to a commercial printer 
using our Centronics 
Interface). The 
assembler mode handles 
alE standard ZBO 
mnemonics, numbers in 
hex or decimal, 
comments and user- 
selected lables. 



Memotech Keyboard 

The Memotech plug-in Keyboard plus buffer pack takes 
the eilorl out of data entry for Tim«x users. The Keyboard 
has a light prolassional touch and is housed in an elegant 
aluminum case. The simple plug-in system means that you 
are not obliged to open up yout Ttmex, use a soldering 
iron or Invalidate your Timex warranty. 

Keyboard Buffer Pak 

The Buffer Pak performs a "housekeeping" function for the 
Keyboard^ inledacLng directly with the port of you; Timex. 

$99.95 — (keyboard k buffer included) 




$49.95 



$49.95 



Noie! All Memotech products carry a 6 mo. warranty. 80 

column dot matrix printer packages Available at a 
subslantsal savings from Memotech 



Order at no risk {10 day money-back guarantee): Call l-BOO'662-0949 (Colorado 1-303-9B6-1S16). Or send your 

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Shipping /Hand ling $4.95; Colorado Residents add applicable sales tax. 



iii^M.^UM 



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■ lis K •> 



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VIDEO TECHNOLOGY'S VZ200 has cslculRtor-type k»yt. 

Commodore Business Machines 

Commodore Business Machines, one of the longtime 
microcomputer manufacturers, also has a keyboard- computer 
entry in this price category, the VIC-20. CBM, as the manufac- 
turer is also known, has been one of the firms engaged in a hotly 
contested drive for domination of the under-S500 marketplace 
and even though the VIC -20 carries a $199.95 manufacturer's 
suggested retail price tag, you should be able to fmd it for much 
less. 

Driven by a 6502, 8-bit microprocessor, the VIC-IO feahires a 
fuU-travel keyboard. Some of its keys, such as the quotation 
marks, are in nonstandard locations, so tliis could slow an 
accomplished touch typist. However, once the user is familiar 
with the keyboard, it should be easy to use. Four function keys 
are provided. 

In the accompanying table, you will find the VIC-20 listed 
three times in this price class. At each level something has 
increased and if you note, the first addition is the data recorder. 
At the second level, user memory is expanded. At the third 
level, memory is expanded farther. 

The VJC-20 system is fully programmable in BASIC. It 
features color-display capability with graphics resolution of 
176- by 184-dots and it is capable of generating a 22-chatacter 
by 23'Une display. It is also capable of generating sounds over a 
five-octave range. 

In this portion of the price range, the VIC-20 is limited to 
either cassette tape or plug-in cartridge software. However, its 
versatility grows as more system expansion takes place, as you 
will see later. 

Atari 

Atari Home Computers has three entries in this price cate- 
gory, the $199 model 600XL, the S299 (give or take a few 
dollars) 8Q0XL and the $499 model 1200XL. The reason the 
price of the 800XL isn't detailed is because specific pricing for 
the new models offered by Atari was not available at press time. 
Atari has a total of five models in the home-computer market. 

The low-cost 600XL is equipped with 16K of user memory 
that is expandable to 64K. It also features a full-stioke typewri- 





S^ECTHAViDEa 



S SV-32B uses a Z60A tn!croproc«9sor. 



ter keyboard and is programmable in BASIC . This low-cost unit 
expands once with the addition of Atari's data recorder and 
features five text modes and 1 1 graphics modes with 256 colors. 

The 600XL is capable of a maximum graphic resolution of 
320- by 192-dots and a 40-character by 24-line text display. A 
serial input-output port is standard on this unit as are two 
game-controller ports. It has a built-in RF modulator for using a 
home television as the output device. 

The 800XL, priced somewhere between the 600XL and the 
1200XL, includes all the features of the lower-priced model, 
plus 64K of user memory. It also has outputs to enable you to 
connect the computer to either a tetevison set or a monitor. 

This new line of computers seems to fix one of the weaknesses 
of the former price leader, the 400, which has been discontin- 
ued. The 400 used a membrane keyboard that has never been 
popular. Instead, the new machines sport keyboards with 
typewriter-style keys. They also include slots to accept software 
cartridges. 

The only machine that continues in Atari's lineup is the 
I200XL, which is driven by a 6502 8-bit microprocessor. It 
features a keyboard with typewriter-like keys and is program- 
mable in BASIC, 

Also included in the basic outUne of this machine is a parallel 
printer port and two game controllers. Its display capabilities 
include the generation of up to 256 colors and 40-character by 
24-!ine text generation. It interfaces with a home television set, 

Netronlcs 

If you want to "roll your own" microcomputer, then you 
have three choices from Netronics — die Elfll, Expiorer/85 and 
the Exp!orer/88-PC. 

The Elfll is one of the oldest kit computers on the market and 
is driven by the venerable 1 802 8-bit microcomputer from RCA. 
It is also one of the last microcomputers on the market to still use 
Tiny BASIC. 

Constructed on a small PC board, the Elf U uses a hex keypad 
for machine-language programming. It generates a composite 
video display for interfacing with a monitor or it can interface 
with a home-television set through an RF modulator. An ex- 
tremely expandable machine — more than half the motherboard 
is reserved for that — at its basic level there arc only 256 bytes of 
user memoiy. However, that can be expanded to 64K. Options 
include a full keyboard and an A/D converter board. As you can 
see from the chart below, it upgrades several times in tlus price 
category. 

Far more complete machines are represented by the Explorer! 
85 and the Explorer/88-PC. 

The Explorerl85 contains an S-100 bus — 100 signal-lines on 
the motherboard that cany data, address, and control informa- 
tion to the various boards plugged into it — and as a result, 
expansion is nearly unlimited. Various S-100 boards that are 
available include RAM boards, fioppy-disk conurollers, serial 



mm 



uni) p;ira!lcl I/O hoards, and more. The /■'xi}larfr/H5 is also 
capable nt running [lie ihc CP M operatini: syMcm, 

The E.xitltin'rifiS-PC is a t;niid learning experienec lor those 
who wdiild tike lu see what makes an IBM-conipaithle machine 
tick. It nul iinly includes the nu)therboard and microprocessor, 
but alsii the IB.\)-type expansion bus. With the correct add-on 
board, cabinet and drives, the user has an IBM-compatible 
system. In tact, in one of the higher price categories, (here is :i 
full-blown kit Ihat will produce such a machine. 

NEC 

The NKC PC -6000 is another of the computers found on the 
market today with ar integral keyboard. Priced at S349.95. it is 
driven by a Z80 A -compatible microprocessor. The PC-6000 
contains 16K of user RAM and Is expandable to 32K with an 
optional cartridge. 

Us BASIC programming language is resident in i6KofROM 
and features enhanced graphics and sound capabilities. Capable 
of color graphics with a resolution of up to 256- by 192-dots. the 
PC -6000 is useful for color graphics work. In the text mode, 
resolution i.s 32-characters by 16-Iines. A composite video out- 
put is available. 

The PC-6000 upgrades once in this price category with the 
addition of the NEC-offered cassette recorder for mass storage. 

Multitech 

Multitech Electronics has two offerings in this pricing cate- 
gory, the MPF-iP and the MPF-ll. 

The MPF-tP is driven by an 8-bii Z80 microprocessor. It 
contain 4K of RAM memory that is expandable to iOK via an 
optional input output and memory board. 

Basically a computer literacy machine, the MPF-IP has a 
49-key keyboard with calculator-type keys. The keyboard will 
enable a user to enter programs in assembly language, machine 
code. BASIC, or FORTH. 



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MULTtTECK'S MPF-IP Is another Z80A 



ne titsplay or this device is a 20-digit. 14-scgmcn( 
alphanumeric green tube display that scrolls much like a Times 
Square billboard. 

It features a built-in speaker, battery-operated memory back- 
up circuit and such options as an L-PRQM (llrasable Programm- 
able Read-Only Memory) board, a specch-synihcsii'.er board, 
thermal printer, and a combination I/O and memory board and 
acces.sory kit for experiments. 

The MPF-ll is an .\pple-compa(ible machine driven by a 
6502 H-bit microprocessor. Featuring 64K of user memory, the 
MPF-ll is programmable in BASIC via its .5.3-key standar<l- 
layou! keyboard with calculator-like keys, A serial port atlow.s 
interfacing with peripheral devices such as modems or printers. 

The MPF-ll will interface with a u.scr's choice of vjdeo- 
dLsplay device. It Ls capable of displaying 40-character.s by 
24-linesof text and six colors with a resolution of up toa 180- by 
192-dots, 

Spectravideo 

Spectravideo also has two computer offerings in this price 
category, the SV-318 and the 51^25. 

The 5V- J /S is driven by a 3.6 MHz Z80A microprocessor and 
features 32K of user memory built-in. This means that nearly 
from the start this unit can handle sophisticated applications 
programs. 

The keyboard, which uses a standard-keyboard layout and 
calculaior-type keys, also features user-programmable function 
keys. 

Programmable in BASIC, as are most of the other low-cost 
home computers on the market, it is capable of handling high- 
level color-graphics functions. A user can address 16 colors 
from the keyboard with a resolution of 256- by 192-dots. 

The more expensive SV-328 is also driven by a Z80A micro- 
processor. It features 80K of RAM — the top amount found in 
microcomputers in this price category — and built-in BASIC. 

Further, this machine features CP/M compatibility, which 
increases the flexibility and usefulness of this computer, es- 
pecially in a small-business setting. 

It also features two built-in ROM-resident programs, a word- 
processing application and a terminal application, which make 
this a fuli- featured machine from the start. 

An 87-key, full-stroke keyboard offers 10 user-definable 
functions, three special word- processor keys, 34 keyboard- 
generated computer-graphic symbols, and a separate numeric 
keypad. 

The screen is somewhat limited for serious business work, 
offering 32 characters- per-line in the graphics mode and 40 
characters-per-line in the text mode, but it should easily serve 
the average home user. 

At this level, data storage is via a built-in cassette interface, 
while its composite video and audio output are through an RF 
modulator. 

Sord 

Another of the low-priced keyboard-computers is the Sord 
MS. which is driven by a Z80. It upgrades once in this price 
category and features two joysticks and programming for house- 
hold accounting and bank-loan management. Input/output is 
handled through a parallel printer port, while data can be saved 
to cassette. A home^tcle vision set is used as a display. 

Utiitronics 

Driven by an 8-bit 6502 microprocessor with a Texas In- 
struments video-display processor for arcade quality graphics, 
the Sonic uses a Wajferdrive (endless-loop tape) that allows full 
read/ write capabilities and mass storage for I28K. 

The Sonic includes a 1 6-color display. 40 column display and 
a 70-key typewriter-style keyboard. The keyboard includes 10 
function keys. 

An additional 32K of RAM can be added to this system with 
the addition of a RAM module. It interfaces with the Sonic 's 
expansion port. R-E 



I 




I 




uamput 




Surprising sophistication and 

low cost are the 

characteristics of the 

systems in this category. 



^SOO to ^lOOO 



MARC STERN 



L 



rr'S AMAZING THE AMOUNT OF SOPHISTICATION BUILT INTO 

today's crop of low-cost home computers. Just a few years ago, 
machines in this price category were fairly primitive affairs, 
with little user memory and few peripherals. In fact, the 
microcomputer world was dominated by hobbyists, rather than 
home users. These hobbyists put together their systems with a 
little bit from this source and a little bit from that source, until 
they had fairly decent machines. 

Contrast this situation wiih today where anyone can go to a 
retai! outlet or computer store and buy a machine with 64K of 
user memory, sophisticated peripherals, and graphics capabil- 
ity. Today's microcomputer market has radically changed and 
the consumer has benefited from that change. 

In this price category, some new companies make their first 
appearance. Some of these companies are more widely known 
for their consumer-electronics goods than their computer hard- 
ware and they include Casio. Sanyo, and Toshiba. Other compa- 
nies, better known in the computer peripheral business than for 
their home computers, have also joined and they include Epson 
America and Formula International. Even a widely known game 
manufacturer, Coleco. has an entry in this price level. 

New machines also make their appearance from Commodore 
Business Machines and Atari. 

At this price level, many of the machines mentioned in the 
under-S500 price category start to become more powerful sys- 
tems. So, without further delay, let's take a look at the new 
entrants in this market and then wrap up with a look at how some 
systems have matured. 

Coleco 

The Adam is Coteco's first entry into the computer market- 
place, and it is being marketed as a complete system. It includes 
a standard printer in its initial configuration. 



User memory stands at 80K, which is enough for most choires 
that a home-computer user might have and the system features a 
standard typewriter- like keyboard with 75 full-travel keys. Built 
into this system is a word-processing package. The Adam is also 
compatible with CP/M, which makes this system a candidate for 
small businesses, because of access to the rich variety of CP/M 
programs. 

Unlike other machines in this price category, the Adam in- 
cludes an integral storage device, called a digital data-pack 
drive, capable of 500K of mass storage. According to industry 
reports, it is a tape drive, much like others on the market. 

This near full configuration makes this machine ideal for the 
person looking for a fairly complete system under $1000. It is 
programmable in BASIC. 

Formula International 

Long associated with the hobby-electronics world, this com- 
pany is offering an Apple-compatible kit called the Pinecom. It 
is driven by a 6502 8-bit microprocessor and the kit includes the 
basic computer with keyboard and little more. 

Programmable in BASIC, ihe Pinecom has 64K of user mem- 
ory. Data input is via a 60-key keyboard and the unit is capable 
of 40-character by 24-line display for output. It also has color 
capability. It upgrades once in this price category with the 
addition of a parallel printer port. 

Toshiba 

Better known for its semiconductors and consumer- 
electronics products, Toshiba has introduced its TIOO computer 
that is driven by a Z80A. 

The TIOO, in this price category, is a pretty barebones ma- 
chine. It includes 64K of user memory but mass storage is 
limited to cassette tape. 



3 
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33 






95 



Big RADIO-ELECTRONICS TBT^^B 




j^B 


H 




1^1 


^K 




■ 


TABLE 1— $500 to S1000 
Manufacturers 


Model 


Price 


CPU 


Word length 


Operating System 


Languages 




NEC Home Electronics 


PC-6CKW 


5500 


Z80A-compatit>le 


8-tiit ■- 


N/A ■ 


BASIC 


i 


dommodore Business 
Machines 


Pet 64 


$500 


6500 senes 


8-blt 


NA 


BASIC 




Atari Products 


800XU 


S500 
(esl.) 


6502C 


8-bil 


N/A 


BASIC 


i 


Sharp Electronics 


PC-1250 


$505 


Custom CMOS 


8-bit 


NA 


BASIC 




Atari Products 


600XL 


■$5Tg~ 


6502C 


B-bIt 


N'A 


BASIC 


1 


Texas Instruments 


T1-99/4A 


$525 


TMS9900 


16-bit 


N.A 


BASIC 




Panasonic Co. 


H1400 


S538 


6502 


8-btt 

■fc 1 


SNAP 


BASIC 




Netronlcs Research 


Explorer/85 


$539.70 


8085 


8-bit 


N.'A 


machine 




Radio Shack 


TRS-80 Color 
Computer 


$S49 


6809E 


r-BH 


N/A 


BASIC 


i 


NEC Home Electronics 


PC-6000 


S550 


Z80A-oompatible 


3-bit 


NA 


BASIC 




Texas Instruments 


CC-40 


$555 


fi^-du ^^^ 


e-bit 

I 


N/A 


BASIC 




Netronlcs Research 


Elf II 


SS59.30 


1802 


8-bit 


N/A 


machine/BASIC 




Texas Instruments 


TI-99/4A 


$585 


TMS9900 


16-bit 


N/A 


BASIC 




Netronlcs Research 


Explorer/85 


$589.65 


8085 


8-bit 


N/A 


machine 




Commodore Business 

Machines 


Commodore 64 


$595 


6510 


8-brt 


N/A ^^K 


BASIC ^^^ 


■■ 


Atari Products 


1200XL 


$598 


6502 


8-bit 


N/A 


BASIC 




Spectravldeo 


SV-328 


$600 


Z80A 


8-bit 


N/A 


BASIC 


., 


Sharp Electronics 


PC-1500 


$600 


Custom CMOS 


6-bit 


N/A 


BASIC 




Spectra video 


SV-328 


S600 
(est.) 


280A 


8-btt 


N/A 


BASIC 




Coleco Industries 


Adam 


$600 
(est.) 


Not announced 


Not announced 


N./A 


BASIC, LOGO 




Panasonic Co. 


H1800 


S638 


6^05 


8-fait 


SNAP 


BASIC 

\ 


m 


Formula International 


Pinecom (kit) 


$645 


6502 


S-bit 


N/A 


Not announced 




Commodore Business 
Machines 


Commodore 64 


$670 


6510 


8-bit 


N/A 


BASIC 




Netronlcs Research 


Explorer''85 


$689.60 


8085 


8-bits 


N/A 


machine.'BASlC 




Texas instruments ^^^^r^. 


CC-40 

L 


$695 


7C20 ^^^^ 


''fetetft J..*'-. * ' -■ 


N/A ^^^ 


BASIC 




Spectravideo 


SV-328 


S700 


Z80A 


8-blt 


N/A 


BASIC 




Formula International 


Pinecom (kit) 


$730 


6502 


d-bit 


N/A 


Not announced 




Radio Shack 


TRS-80 Pocket 
Computer PC-2 


$759.75 


Custom CMOS 


8-bit 


N/A 


BASIC 


4 


Netronlcs Research 


Explorer(85 


$789.80 


8085 


8-bit 


N'A 


machine/BAStC 




Toshiba America 


T100 


S795 


Z80A 


8-bit 


N.^A 


BASIC 




Epson America ^^mi 


HX-20 


$795 


6301 


8-bttjj^^ 


M/A 


N/A 




Muttitech Electronics 


MPF-II 


$797 


6502 


S-bit 


Proprietary 


BASIC 




Radio Shack 


TRS-80 Model 
100 


$799 


80C85 


8-bit 


N/A 


BASIC 






^^^ 


^ 




^^^ 


^^^ 




^ 



p 


1 

Memory 'Storage 


Keyboard 


I'D 


Display 


1 
ComiTMnts 


1 


32K/cassette recorder 


71 keys, 6 muitifunction 
keys 


1 parallel, 2 game con- 
troller ports 


256 X 192 capability. 32 
X 16 text, composite video 
output avail, 


RAM 




64K' cassette interface 


standard, numeric 
keypad 


1 serial 


integral display 


basic system 

J 


1 


64K/cartridge sfot 


54 keys, help key, 4 
special function keys 


1 serial, 2 controller, ex- 
pansion connector 


built-in video output sup- 
ports 256 colors, 40x24 
text 


basic system M 




9.7K/cassette recorder 


54 keys, reserrable 
keys, keypad 




24-character x 1 line liq- 
uid crystal display 


interface pnnier cassette unit | 
added, user memory ex- 1 
pandod 8K 


1 


IBK/cassette recorder/car- 
tridge slot 


62 keys, help key 4 
special function keys 


1 senal, 2 controller, ex- 
pansion connector/ 
interface module 


built-in video output sup- 
ports 256 colors, 40x24 
text 


intenace module added lor 
(uture expansion ^ 




4SK/'cassette interlace 


standard 




16 colors 


user memory upgraded by | 
32K 1 




4K 


65 calculator keys in 
typewriter arrangement, 
redefinable keys 


input'Output adapter/ex- 
pansion bus 


1-line X 26-character liq- 
uid crystal display 


VU adapter 




256 bytes/cassette inter- 
face 


56 keys 


N/A 


12-inch monochrome CRT 


ij-100 card cage added lor 
expansion boards 


1 


32K/cassete interface 


53 keys 


1 serial 


32 X 16 color text 
mode/256 x 192 graphics 
cap^ility 


uSfif mSiVidry expaMai to 
32K 




32K/'cassette recorder 


71 keys, 5 multifunction 
keys 


1 parallel, 1 serial, 2 
game controller ports 


256 X 192 capability 32 
X 16 text, composite video 
output avail. 


serial port aOoeO 


V 


22K/sottware cartridges 


standard layout 


1 serial, 1 parallel 


31-character x i line liquid 
crystal display 


senai ano parallel pons 




16K/casette interface 


56 keys 


1 serial. 2 parallel 


home TV 


Keyooaro. liAbiu addea 


1 


48ICcassette interface 


standard 


HEX-BUS expansion 

unit 


18 colors 


MiiX-OUij expansion unii 




4K'casset[e interface 


56 keys 


N/A 


12-lnch monochrome CRT 


iVA'j T-emory increases to AK 




64K/cassette interface 


60 keys, 4 program- 
mable keys 




16 color graphics ca- 
pability/text 


basic system 


k 


tJ4l<; cassette recofder'car- 
tridge slot 


standard typewnter/16 
special function keys 


1 printer, 2 controller, ex- 
pansion connector 


built-in video output sup- 
ports 256 colors, 40x24 
text 


casselie recoraer 

1 




80IC'cassette interface 


87 keys, keypad, 10 
definable keys 






basic system 




10.6K' cassette interface 


65 keys, 10-key keypad, 
function keys 




26-character x 1 line liq- 
uid crystal display 


cassette iruenace. pnnter/piot- j 
ter added 1 




aOK/cassette interface 


87 keys, 10 program- 
mable, numeric keypad 




40 X 24 text mode ca- 
pability/! 6 colors 


basic system 




80K.'500K memory storage 
drive (see text)/software 
cartridges 


75-keys, 6 "smart" keys, 
detachable i2-key key- 
pad 


Not announced 


color graphics ca- 
pability'36 column 


basic system 


» 


8K 


65 calculator keys in 
typewriter arrangement, 
redefinable keys 


Input/output adapter/ex- 
pansion bus 


l-ltne X 26-character liq- 
uid crystal display 


1 O adapter added 

1 




43K 


66 keys. 14-key keypad 




40 X 24 text mode/280 x 
192 graphics capability 


Apple-compatible kit 1 




64K('cassette recorder 


60 keys, 4 program- 
mable keys 




16 color graphics ca- 
pabilitytext 


cassette recorder 




4K,'cassette interface 


56 keys 


N.A 


12-inch monochrome CRT 






iiiiKystrngy tioppy/software 
cartridges 


standard layout 


1 serial, 1 parallel 


31-character x 1 line liquid 
crystal display 






SO K cassette recorder 


8/ keys, 10 program- 
mable, numeric keypad 




40 X 24 text mode ca- 
pability/16 colors 


cassette recorder 




48K 


66 keys, 14-key keypad 


1 parallel 


40 X 24 text mode/280 x 
192 graphics capability 


parallel port 


¥ 


32K 


65 calculator keys, 19- 
key keypad, 18 defina- 
ble keys 


60 pin bus connector 


1 line 7 X 156 dot matrix 
liquid crystal display 


rnemdry expanoeo to 321^, 4 
memory modules added 




16K/cassette interface 


56 keys 


N/A 


12-inch monochrome um 


::' ■' Jiismflfy extiands i*ibK 




64Kcassette interface 


89 keys, 8 special func- 
tion keys 


1 parallel, l senai 




basic system 




lei^mtcrocassette storage 
(built-in) 


standard, t> tunction 
keys, 10-key keypad 


1 senal 


4-iine liquid crystal display 


(ap computer "i 




"S?KT"i&OK"SS/DD 5 •//■ 
drive 


52 keys 


1 parallel, 1 game con- 
troller 


supports 40 X 24 text'6 disk dnve added 
colors/ 180 X 192 resolution/ 
display is user option 




eK'cassette interface 


56 keys, embedded 10- 
key keypad, 8 program- 
mable 


1 parallel, 1 serial, built- 
in modem 


40 X 8 liquid crystal dis- 
play 


lap computer 



o 
o 

3 

a 
m 

CO 

S 
97 



HHHIHHHHIHHHHHHHHHHIIHH^I 


TABLE 1— $500 to $1000 (continue!) 
Manulacturer Model 


Price 


CPU 


Word Length 


Operating System 


Languages 


m 


NEC Home Electronics 


PC-6000 


$800 


Z8DA-oompatible 


e-bit 


N/A 


BASIC 




Atari Products 


1200XL 


$818 


6502 


8-bit 


N/A 


BASIC 




Sharp Electronics 


PC-1500 


$825 


Custom CMOS 


8-bil 


n;a 


BASIC 




Texas Instruments 


TI-99/4A 


S835 


TMS9900 


16-bit 


N/A 


BASIC 




Panasonic Co. 


JR-200 


$880 


Not announced 


Not announced 


Not announced 


BASIC 




Panasonic Co. 


H1400 


$556 


6502 


8-bil 


SNAP 


BASIC 




^^^ Netronics Researcti 


Explorer^SS 


$§39.30 


3085 


8-bit 


N^A 


machine/BASIC 




B Atari Products 


600XL 


$969 


6502C 


8-bit 


Atari DOS If/Ill 


BASIC 




H Radio Shack 


TRS-80 Pocket 
Computer PG-2 


$979.70 


Custom CMOS 


8-b(t 


N/A 


BASIC , 


m 


B Sanyo 


M8G 550 


$995 


8088 


16-bit 


MS-DOS 


BASIC 




■ Commodore Business 
B Machines 


Executive 64 


$995 


6500 series 


8-bit 


Proprietary 


BASIC 




■ Hewlett-Pac)(ard 


HP75C 


$995 


Not announced 




N/A 


BASIC 




■ Radio Shacic 


TRS-60 Model 
100 


$999 


80085 


8-bi( 


N/A 


BASIC 




^^H Radio Shacit 


TRS-80 Model 4 


$999 


280A 


8-bit 


N/A 


BASIC , 


mk 


B Radio Shacic 


TRS-80Modellll 


$999 


Z80 


8-bit 


N/A 


BASIC 




H Casio, Inc. 


FX-9000P 


$999 


Z80 A- compatible 


8-bit 


Not announced 


BASIC 




B 



£0 

O 

z 
o 

(X 

LU 

O 

Q 

^< 



Programmable in machine language and BASIC, data entry is 
via the 89-key typewriter-style keyboard. This keyboard also 
has 8 special-function keys that are u.ser programmable. This 
unit includes standard serial and parallel ports for input/output. 

Epson 

Another of the entrants on the market with lap computers, 
Epson America is probably better known for its microcomputer 
printers than it is for its small systems. However, in the last year 
it has come out with two, the HX-20 lap computer and its 
user-friendly QX-IO. 

In this price category, the HX-20 lap computer makes its 
debut. Like other lap models, this one is capable of independent 
operation with batteries. Its 6301 8-bit microprocessor is cap- 
able of handling sophisticated number-crunching or just about 
any other task it will be called on to handle. 

The beauty of this type of machine is its ability to go any- 
where. With 16K of user memory, it can store about 1 6 typewrit- 
ten pages in memory, or about as much daily production as 
anyone in the field might generate. The machine also features a 
built-in microcasselte storage system. 

Its full-travel, keyboard has five multifunction keys, A serial 
port allows the HX-20 to be used with a modem so that the 
person in the field can upload or download files to/from a 
mainframe or office minicomputer system. Further, this port 
will allow the user to tie into any of the many information 
networks available today. 

The HX-20' s display is more limited than the competition in 
the lap market. Unlike other machines with 8-linc liquid-crystal 
displays, the HX-IO has a four-line display, although this should 
be enough for many users. 

Sanyo 

Another of the firms that is better known for its consumer 
electronics products, Sanyo, also has a microcomputer, the 



MBC 550. Unlike other small-computer systems in this price 
category , the MBC 550 is driven by a 8088 microprocessor. This 
feature alone will give the user access to the rapidly growing 
world of MS-DOS applications software that runs on this micro- 
processor. (A version of this disk operating system — PC- 
DOS — is what is primarily used in the IBM Personal Computer 
world and this is what has contributed to its lead in the 16-bit 
single-user system worid.) 

Unlike other .systems in this price category, this one comes 
with 128K of user memory. It is one of the only microcomputers 
in this area to provide so much standard start -off RAM. {Sixteen 
bit computers can address up to 1 .2 megabytes of RAM.) And, 
unlike other systems in this category, the MBC 550 comes with 
one single-sided, double-density 160K floppy disk drive for 
storage. When you add in other peripherals, as we have done in 
other price categories, you will find this is a powerful home 
system. 

Radio Shack 

Not only does this major consumer- electronics firm have 
small -computer- system entries in the S100-to-S500 field — 
primarily handheld and small color systems; they also have 
entries in this category that begin their climbs toward computing 
power. 

The first new Radio Shack system is the Model 100 lap 
computer. Another of the many lap computers that are appearing 
on the market, the model 100 uses a CMOS 80C85 8-bit micro- 
processor. It is a low-power version of the standard 8085. 

This system comes with 8K of user memory, but, while that 
figure may seem small, it must be noted it has several powerful 
programs built into ROM that are accessed at the touch of a 
button. This means that the user memory can be used for user 
input without worrying about loading an applications program 
into memory. 

Programmable in BASIC, the Model 100 sports a full- travel. 



» 


Memory/storage 


Keyboard 


1/0 


Display 


Comments 




32K'cassette recorder 


71 keys, 5 multifunction 
keys 


1 parallel, 1 serial, 2 
game controller, digi- 
tized touch panel 


256 X 192 capability, 32 
X 16 text, composite video 
output avail. 


expansion module, digitized 
touch tablet added 


1 


64K'cassette recorder/car- 
tridge slot 


standard typewriter/16 
speciai function keys 


1 printer, 2 controller, ex- 
pansion connector' 
interface module 


bui t-in video output sup- 
ports 256 colors, 40 X 24 
text 


interface module added 




10.6K'cassette intefface 


65 keys, 10-key keypad, 
function keys 


1 serial 


26-ctiaracter x 1 line liq- 
uid crystal display 


serial port added 




48K'cassette interface 


standard 


HEX-BUS expansion 
unit, peripheral interface 


16 colors 


expansion Interface 




32K/cassette interlace 


60 keys, multtfunclion 
keys 


1 parallel, 1 serial 


RGB CRT/RGB and com- 
posite video output 


color cWr 




14K 


65 calculator keys in 
typewriter arrangement, 
redefinable keys 


inputoutput adapter/ex- 
pansion bus 


Mine X 26-character liq- 
uid crystal display 


memory expanded to 14K 




64K/cassette trrterf£K» 


56 keys 


"N/A 


12-incJi monochrome l;hi 


user IBBWBWiqMBaB to 64K 




16K'{loppy disk drive 


62 keys, help key, 4 
special function keys 


1 serial, 2 controller, ex- 
pansion connector/ 
interface module 


no std. CRT/built-in video 
output supports 256 col- 
ors. 40x24 text 


floppy disk drive added 


i 


32K/cassette interface 


65 calculator keys, 19- 
key keypad, 18 defina- 
ble keys 


60 pin bus connector 


1 line? X 156 dot matrix 
liquid crystal display 


cassette interlace'prinier 
added 




128K,1 160K fioppy disl< 
drive 


Not announced 


1 parallel, joystick port 


color graphics capability 
{no further details) 


basic system 


» 


64K'1 170K 5 W floppy 
disk drive 


standard 


1 IEEE-48a serial 


6-inch tiigti-res. color dis- 
play 


transportable business com- 
puter 




1 6 K' built-in card reader 
(see text) 


61 keys, multifunctional 
keys 


interface porl for add-on 
options 


32 character one-line LCD 


basic system, includes card 
reader 




24K'cassette interface 


56 keys, embedded 10- 
key keypad, 8 program- 
mable keys 


1 parallel, 1 serial, built- 
in modem 


40 X 8 liquid crystal dis- 
play 


.memory increased to 24K 


K 


letCcassette interface 


70 keys, 3 program- 
mable keys, 12-key 
keypad 


1 parallel 


12-inch monochrome/80 x 
24 text (64 X 16 double- 
sized) 


basic system 




16K/casselte interface 


64 keys, 12-key keypad 


1 parallel 


12-inch monochrome 


basic system 




4K.cassette interlace 


67 keys, 16-key keypad 




5. 5- inch monochrome 


basic system 





I 



typewriter-like keyboard. It also features a cassette-tape in- 
terface for data storage. 

An interesting feature of this system is the built-in direct- 
connect modem and software to drive it. This makes the Model 
1 00 a very versatile machine for use in the field because it can act 
as a portable lerminai from just about anywhere there is a phone. 
Its40-characterby 8-line display is more than adequate for most 
field situations. This unit upgrades once in this category with the 
addition of 16K of RAM. 

Another offering from Radio Shack is the new Model 4, an 
all-in-one, terminal-type computer system. 

At this point in its pricing, the Model 4, driven by an 8-bit 
Z80A microprocessor, relies on a cassette recorder for mass 
storage, has I6K of RAM (thai is more than enough for average 
home usages), and it includes a 70-key standard typewriter-type 
keyboard. This keyboard contains three programmable keys and 
a separate 12-key pad. 

The beauty of an all-in-one system versus others on the 
market is that the buyer doesn't have to worry about which 
display unit to buy. because the system includes one. The 
display on the Model 4 is a full 80 characters by 24 lines. 

Similarly, the TRS-80 Model II! desktop, which uses a ZSO 
microprocessor instead of the Z80A. is another all-in-one sys- 
tem. It also differs from the Model 4 in its display, which is 
64-characters by 1 6-lines. It is an older unit and offers the same 
amount of basic user memory, although its keyboa.'d is more 
limited. 

Both systems can be expanded into fairly powerful units, as 
will be seen later. 

Two other Radio Shack computei^ that were introduced in the 
$ 100 to S500 price category, upgrade in this price category. The 
Color Computer has its memory increased to 32K, while the 
PC-2 Pocket Computer reaches 32K of RAM and its flexibility 
is increased with the addition of the printer/cassette interface 
expansion unit. 



Commodore 

Commodore is another computer manufacturer with a wide 
range of products. In this price category, alone, three new 
systems debut including the Pet 64, aimed at business, the 
Commodore 64, and the Executive 64, a tote-along system. 

The Pet 64 continues Commodore's policy of making a dis- 
play screen available with its microcomputer systems. Driven 
by a 6500-series — Commodore actually came up with this scries 
and uses it in all its products — 8-btt microprocessor, the Pet 64 
has 64K of user memory standard. 

With its standard typewriter-like keyboard, a user can pro- 
gram in BASIC and then save the results to a cassette recorder. 
Actually the basis of a very powerftii system, the Pet 64 comes 
with a standard ! 2-inch monochrome monitor and a serial port 
so the unit can interface with a printer or modem for output. 

The Commodore 64, of which the Pet 64 is n variant, is 
another unit driven by a 6500-series microprocessor. Very ex- 
pandable, it will interface with all the peripherals offered for the 
VlC-20. Like the VIC, the Commodore 64 has been part of the 
ongoing battle for dominance in the low-cost personal computer 
market and Commodore has cut its price. Although the price in 
our listing looks high, you should be able to find it substantially 
discounted. 

Programmable in BASIC, the Commodore 64 has a standard 
64-key typewriter-like keyboard and it features 64K of RAM 
that makes it a highly versatile unit for many tasks. It will 
interface with a home television set through a built-in RF mod- 
ulator and is capable of 16-color graphics and text. The system 
upgrades once in this price category with the addition of the 
digital tape recorder offered by Commodore. 

Also based on the Commodore 64 is the Executive 64, another 
entry in the transportable market. Again driven by a 6500-series 
8-bit microprocessor, the Executive 64 has one built-in i 70K 
single-sided, double-density disk drive for mass storage. This 



O 
o 



OS 1 



sal 



I 



en 
o 
z 

o 

tr 

h- 
o 

LLl 

_J 

6 



increases the capability of the uait from the start because it is 
able to access and store large amounts of data very quickly. 

The built-in 6-inch display is capable of high-resolution 
color, a departure from the usual monochrome display found on 
other transportable computer systems. 

The Executive is capable of interfacing with a printer through 
a parallel port for hard -copy output, (t is the basis of an expand- 
able transportable system and, as we shall see, it continues to 
expand in other price categories. 

Atari 

Best known for its home games. Atari's line expands in this 
price category with the addition of the 800XL. Driven by a more 
advanced 6502C 8-bit microprocessor, the 800XL features 64K 
of RAM. Not only is it capable of high-levei tasks because of its 
level of RAM; it is also capable of using Atari's programming 
cartridges through a standard cartridge port. 

Programmable in BASIC, the 800XL has a standard 
typewriter-like keyboard for data entry. This is aided by four 
special-function keys and a help key. Its built-in video output 
supports 256 colors in the graphics mode or 40-characters by 
24-Iines in text mode. The display of 40 characters-per-line 
would seem to limit this unit's usefulness to casual word- 
processing or note writing. 

In this price categorj- the 600XL upgrades with the addition of 
an expansion module that permits further system expansion, A 
second expansion adds a disk drive. 

The 1200XL upgrades twice. With the first upgrade, the 
Atari-offered data cassette recorder has been added to the picture 
for mass storage, while, with the second, the expansion in- 
terface module has been added to permit system growth. 

Hewlett-Packard 

Hewlett-Packard has a new entry in this price category, the 
HP75C. Actually a handheld, the HP75C features a "QWER- 
TY" type of keyboard layout. In reality, though, the small 
calculator keys and the rather narrow placement of the keys 
make this keyboard suited only to one-fmger entry than touch 
typing. Its display is a one-line by 32 character liquid-crystal 
display that is limited to casual or field use. 

The //P75C's forte is its portability. With 16K of built-in u.ser 
memory, it is capable of most tasks one would expect it to 
perform in the field. However, this memory limits the 
sophistication of those tasks because it cannot perform functions 
requiring more memory. Perhaps its key feature is its built-in 
card reader. This allows the user to store data on magnetic cards. 

Like other small-computer systems, this one is programmable 
in BASIC. This and other data entry is performed through the 
unit's 61 -key keyboard. The HP75C also features an interface 
port for add-on perhipheral options. 

NEC 

The PC-6000 begins to expand to a much more powerful 
system in this price category. Its Hrst expansion brings the user 
memory to 32K, while its second, the addition of a serial port, 
gives it the ability to communicate with the outside world via 
either a printer or modem. 

The addition of the expansion module and a digitized touch- 
tablet for graphic input gives this system more flexibility and 
sophistication. 

Texas Instruments 

The TI-99I4A expands three times in this segment. Its first 
expansion increases its user memory by 32K, while die second 
adds to its flexibility with the addition of the Hex-Bus option. 
The Hex-Bus allows external peripherals to be added to this unit 
to give it. for example, additional inpuLoutput capability 
through serial and parallel ports that can be added. 

in its next upgrade, the expansion interface is added to in- 
crease the versatility of this system. The expansion interface is 
used to accommodate such items as disk drives. 

TI's CC-40 aiso becomes more fully configured in this price 



category. In its first expansion, it gains I/O capability with the 
addition of parallel and serial ports. With these ports, the com- 
puter can interface with either a printer or a modem for output or 
input. In its second expansion, the CC-40 gains greater — and 
faster— mass storage with the addition of the Wqferiape con- 
tinuous tape-loop data drive. 

Pansonic 

The Panasonic HI 400 andHISOO begin to become more fully 
configured also. In the first expansion, the input/output adapter 
is added to each unit. This enables each unit to interface with 
other peripherals, as will be shown in other price categories. 

In its second expansion, the HI 400 becomes more useful as 
its user memory is increased to !4K. 

The JR-200 computer also becomes a little more powerful in 
this price category as a color monitor is added. 

Metronics 

The Explorer/S5 kit expands five times. In the first expan- 
sion, the S- 100 card cage is added. When this is done, the user 
has the ability to choose from the many S-100 add-in cards 
available to configure his system as he wants. For instance, there 
are cards adding serial or parallel ports, disk controllers, analog- 
to-digital and digital-to-analog conversion, etc. 

However, the memory capacity is still lacking in this unit and 
the second expansion brings it up to4K. At this level, though, it 
is still only capable of performing very basic functions because 
of the limited memory. 

The third expansion adds BASIC, with the addition of the 
correct ROM. This simplifies the use of the ExphrerlSS because 
BASIC no longer has to be loaded from tape. 

Expansion number 4 increases the RAM to a much more 
reasonable 16K. At this level, die machine is capable of per- 
forming more serious tasks. The final expansion brings memory 
up to 64K, 

The Elf n expands here with the addition of a full-blown 
keyboard (replacing the hex pad of the earlier price level .) At the 
same time, the unit becomes more tlexibile in its programming 
capabilities with die addition of BASIC. Now, a user has a 
choice of machine-level or BASIC programming. 

Spectravideo 

The Spectravideo SV-328, described in an earlier section of 
this supplement, expands once in this price category with the 
addition of the company-offered tape recorder. Although it was 
described earlier, as you will note from the chart, its basic price 
puts it in this category, as does its first expansion. 

Sharp 

The Sharp PC-1250 becomes a more versatile unit with the 
addition of a cassette interface and printer. This gives the user 
the opportunity of storing his work on magnetic tape or output- 
ting it to the thermal printer built into the unit. Additionally, the 
unit becomes more versatile with the expansion of user memory 
to8K. 

The PC-1500 expands twice here. The first expansion adds 
the color printer, the plotter, and the cassette interface, which 
gives the user the option of outputting either hard text or saving 
the work to a cassette recorder. 

In its next expansion, the PC-1500 gains the possibility of 
accessing a data network or mainframe computer through the 
addition of a serial port. To use this capability, of course, you 
must add a modem to pass data through the phone lines. Still, it 
shows this system can become a powerful workstation for some- 
one in the field. 

Multitech 

The MPF-II becomes a more powerful unit with the addition 
of a minifloppy disk drive for data storage. A disk drive helps 
increase the flexibility of any system because it gives the user a 
method for quick data storage and retrieval. It is a quantum leap 
over the use of a cassette recorder. R-E 



1 



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1100 



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HOWARD W. SAMS & CO., INC 

4300 West 62 nd Street P.O. Box 7092 

Indianapolis, Indiana 46205 



Repeated By Popular Demand! 



SAMS 20% DISCOUNT SALE 



Once again, Sams helps you in- 
vest in your future with a flat 
20% discount on genuine Sams 
Computer Books, the same ones 
you'll find in our latest regular 
catalog! 

The sale includes our brand- 
new 1983 titles as well as our 
best-sellers — books about the 
Apple n^. fBW» PC, Timex 
Sinclair 1000^, VIC-20, Commo- 
dore 64, TRS-SO*", and more! 

If you're into computing, you 
need to be into a Sams Book 
now! 

ELEMENTARY 
COMPUTING 
Sams/Waite Primers 




UNIX™ PRIMER PLUS 

Presents the elements of UIMIX 
clearly, simply, and accurately, for 
ready understanding by anyone 
in any field who needs to learn, 
use, or work with this remarka- 
ble operating system. Futly illus- 
trated. By Mitchell Waite, Donald 
Martin, and Stephen Prata. 
Ask for No. 22028 .... $19.95 
Now Only $15.96 

CP/M* PRIMER 

(2nd Edition) 

Completely updated to give you 
the know-how you need to 
understand and work with new 
or old CP/M versions im- 
mediately, in any application. In- 
cludes CP/M terminology, opera- 
tion, capabilities, internal 
structure, and more. By Mitchell 
Waite and Stephen Murtha. 

Ask for No. 22170 $16.95 

Now Only $13.56 




BASIC PROGRAMMING 
PRIMER 

(2nd Edition) 

Improved and expanded edition 
gives you fundamental key- 
words, statements, and func- 
tions usable with the IBM* PC, 
Apple* II, or any other com- 
puter running a variation of Mi- 
crosoft BASIC. Also contains 
new, advanced BASIC coverage, 
new game-program listings, and 
more. By Mitchell Waite and 
Michael Pardee 

Ask for No. 22014 $17 95 

Now Only $14.36 




COMPUTER GRAPHICS 
PRIMER 

Amaze yourself! Create com- 
puter animation and other 
graphics routines and techniques 
with this colorful Sams best- 
seller. Many examples, all in 
BASIC. By Mitchell Waite. 
Ask for No. 21650 $15 95 

Now Only $12.76 




PASCAL PRIMER 

You'll learn to generate powerful 
programs in UCSD™ Pascal as 
this Sams powerhouse guides 
you through Pascal program 
structure, procedures, variables, 
decision-making statements. 



and numeric functions. Remark- 
ably user-friendly, with many 
examples and 8 appendixes. By 
Mitchell Waite and David Fox. 
Ask for No. 21793 .. $17.95 
Now Only $14.36 

MICROCOMPUTER PRIMER 

(2nd Edition) 

Covers basic computer concepts, 
the electronics behind the logic, 
what happens inside the com- 
puter as a program runs, and a 
little about languages and 
operating systems. Excellent in- 
troductory material. By Mitchell 
Waite and Michael Pardee. 
Ask for No. 21653 $14 50 

Now Only $11.60 

COMPUTER 
FUNDAMENTALS 




HOWARD W. SAMS 
CRASH COURSE IN 
MICROCOMPUTERS 

(2nd Edition) 

An actual self-study course in 
one lay-flat volume, completely 
updated with new chapters on 
16-bit micros and BASIC pro- 
gramming, expanded coverage 
of applications software, new 
photos, and more. Lets you learn 
about microcomputers and pro- 
gramming fast! No previous 
computer knowledge necessary 
By Louis E. Frenzel. 
AskforNo. 2198S $21 95 

Now Only $17.56 

HOW TO MAINTAIN AND 
SERVICE YOUR SMALL 
COMPUTER 

Shows you simple procedures 
yoii can use to sharply reduce 
problems and down-time with 
your Apple* 11, TRS-SO*. or other 
small computer Also shows you 
how to diagnose what's wrong, 
find the faulty part, make simple 
repairs yourself, and deal with 
the repair shop when profes- 
sional servicing is necessary. By 
John G. Stephenson. 
Ask for No. 22016 . , $17.95 
Now Only $14.36 




MICROCOMPUTERS ON 
THE FARM 

Gives farm-management and 
agribusiness professionals the 
information needed to make in- 
telligent decisions about using 
microcomputers in farming oper- 
ations. Discusses programs, ap- 
plications, examples, and more. 
By Jack 0. Beasley 
AskforNo. 22011 $14 95 

NowOnly$11.96 

MEGABUCKS FROM YOUR 
MICROCOMPUTER 

Shows you how to make money 
using your creative talents 
through your microcomputer, 
and includes details for doing 
your own writing, reviewing, 
and programming By Tim 
Knight. 

Ask for No. 22083 $3 95 

Now Only $3.16 




YOUR OWN COMPUTER 

(2nd Edition) 

Explains and explores computer 
applications, buzzwords, pro- 
grams, hardware, and peripher- 
als. Compares 30 different 
models of personal and small- 
business computers. Easy to 
read, informative, and ideal for 
newcomers to computing. 
By Mitchell Waite and Michael 
Pardee. 

AskforNo. 21860 $8 95 

Now Only $7.16 



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101 



PERSONAL COMPUTERS 
HANDBOOK 

You'll need this practical guide 
to explain the hows and whys of 
your micro'5 microprocessor, 
memory, peripherals, program- 
ming, and hardware/software 
troubleshooting. By Walter H. 
Buchsbaum. 

Ask for No. 21724 . S12 95 
Now Only $10.36 

GUIDEBOOK TO SMALL 
COMPUTERS 

Presents an unbiased review of 
the capabilities of 21 popular 
microcomputer systems from 14 
different manufacturers. Helps 
you make an informed choice. 
By William Barden, Jr. 
AskforNo. 21698 S6.95 

Now Only $5.56 







UNDERSTANDING AND 
BUYING A SMALL 
BUSINESS COMPUTER 

A lively, practical guide for any- 
one considering a micro- or 
minicomputer for business use. 
Filled with useful examples, dia- 
grams, and case studies. Non- 
technical, and not a shopping 
guide. By Susan Blumenthal. 
Ask for No. 21890 $9 95 

Now Only $7.96 

DICTIONARIES 




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USER'S GUIDE TO 

MICROCOMPUTER 

BUZZWORDS 

Handy quick-reference that pro- 
vides an understanding of the 
basic terminology you need to 
become "computer literate." 
Contains onany illustrations. By 
David H. Dasenbrock. 
Ask for No. 22049 $9 95 

Now Only $7.96 



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COMPUTER DICTIONARY 

(3rd Edition) 

More than 12,000 definitions in 
this paperback reference trans- 
late computing terminology into 
language you can easily under- 
stand. By Charles J. Sippl. 
Ask for No. 21652 . . $16.95 
Now Only $13.56 

MICROCOMPUTER 
DICTIONARY 

{2nd Edition) 

Most current, down-to-earth, 
and complete explanation of 
5000-K microcomputer prod- 
uas, procedures, systems, tech- 
niques, and components avail- 
able. By Charles J. Sippl. 
AskforNo. 21696 . $16.95 
Now Only $13.56 

COMPUTER DICTIONARY & 
HANDBOOK 

(3rd Edition) 

Largest, most complete refer- 
ence book available on all phases 
of computers and their applica- 
tions. More than 22,000 defi- 
nitions, plus 14 appendixes. By 
Charles J. Sippl and Roger J. 
Sippl. 

AskforNo. 21632 $34 95 

Now Only $27.96 

COMPUTER MATH 




MICROCOMPUTER MATH 

Excellent introduction to binary, 
octal, and hexadecimal number 
systems plus arithmetic opera- 
tions on all microcomputers. 
Many practical examples By 
William Barden, Jr. 
AskforNo. 21927 . $11.95 
Now Only $9.56 







BOOLEAN ALGEBRA 
FOR COMPUTER LOGIC 

Basic introduction that covers 
everything from binary numbers 
to Karnaugh maps. No knowl- 
edge of higher math needed. By 
Harold E. Ennes. 

AskforNo. 21554 $7 95 

Now Only $6.36 

PRACTICE PROBLEMS IN 
NUMBER SYSTEMS, LOGIC, 
AND BOOLEAN ALGEBRA 

(2nd Edition) 

Sixty-four lessons covering 
number systems, conversions, 
binary and octal arithmetics. 
Boolean algebra, and implemen- 
tation of Boolean relationships. 
By Edward Bukstein. 
AskforNo. 21451 $10 95 

Now Only $8.76 

GENERAL 
PROGRAMMING 

DON LANCASTER'S MICRO 
COOKBOOK, Volume 2: 
MACHINE LANGUAGE 
PROGRAMMING 

Covers address space and ad- 
dressing, system architecture, 
programming using the "those 
#$!&#%$! codes" technique, 
details of input/output, and 
more. By Don Lancaster. 
AskforNo. 21829 $1795 

Now Only $14.36 



u. 



NUMERICAL 
BASIC 

Thoroughly explains techniques 
for using trigonometry, vector 
algebra, and matrix manipula- 
tions under ordinary BASIC on a 
microcomputer. By Bruce Powell 
Douglass. 

Ask for No. 22048 . $15 95 
Now Only $12.76 

CP/M® BIBLE: 
THE AUTHORITATIVE 
REFERENCE GUIDE 
TO CP/M 

Gives you instant, one-stop ac- 
cess to all CP/W keywords. 
commands, utilities, and con- 
ventions. Covers CP/M-86, 
MP/M-SO and 86, CP/Net, and 
more. By Mitchell Waite and 
John Angermeyer. 
AskforNo. 22015 . $1995 
Now Or)ly $15.96 




SOUL OF CP/M*: HOW TO 
USE THE HIDDEN POWER 
OF YOUR CP/M SYSTEM 

Teaches you how to use and 
modify CP/W's internal features, 
including how to modify BIOS, 
use CP/M* system calls in your 
own programs, and more! By 
Mitchell Waite and Robert La- 
fore. 

Ask for No. 22030 $18 95 

Now Only $15.16 

ELECTRONICALLY 
SPEAKING: COMPUTER 
SPEECH GENERATION 

Learn to generate synthetic 
speech with a microcomputer. 
Includes techniques, a synthe- 
sizer overview, and advice on 
problems. By John R Cater. 
AskforNo. 21947 . $1495 
Now Only $11.96 




INTRODUCTION TO 
ELECTRONIC SPEECH 
SYNTHESIS 

Explains creation of an electronic 
"voice", three current speech- 
synthesis technologies, and 
speech quality vs. data rate and 
hardware costs. By Neil Sciater, 
Ask for No. 21896 $8 95 

Now Only $7.16 

COMPUTER LANGUAGE 
REFERENCE GUIDE 

If you know one language, this 
small book can help you under- 
stand six morel Seven chapters 
cover seven languages, and an 
eighth presents a keyword dic- 
tionary By Harry L. Helms, Jr. 
AskforNo. 21786 $9 95 

Now Only $7.96 

FORTH PROGRAMMING JJ. 

• Shows you the differences be- 
tween FORTH-79 and fig-FORTH, 
and how to write or modify 
software using either dialect. In- 
cludes more than 50 useful pro- 
grams. By Leo J. Scanlon. 
Ask for No. 22007 $16 95 

Now Only $13.56 



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INTRODUCTION 
TO FORTH 

A fundamental approach to 
FORTH programming, using 
MMS FORTH in particuiar. Pro- 
gram examples are directly com- 
pared to the same program in 
Level II BASIC for clarity. By Ken 
Knecht. 

Ask for No. 21842 .. $10.95 
Now Only $8.76 




26 BASIC PROGRAMS 
FOR YOUR MICRO 

A series of 26 simple-to-complex 
games, most of which need 500 
to 5000 bytes of RAM (13K is the 
highest). Conversion charts in- 
cluded. By Derrick Dairies. 
Ask for No. 22047 $8 95 

Now Only $7.16 




WHAT DO YOU DO AFTER 
YOU PLUG IT IN? 

Complete tutorial covers 
hardware, software, languages, 
operating systems, data com- 
munications, and more, fol- 
lowed by solutions to the practi- 
cal problems you'll meet while 
using them. By William Barden, 
Jr. 

Ask for No. 22008 . $10.95 
Now Only $8.76 

EXPERIMENTS IN 
ARTIFICIAL INTELUGENCE 
FOR SMALL COMPUTERS 

Takes you into the fascinating 
world of artificial intelligence, 
where you and your computer 
directly participate in sessions in- 
volving reasoning, problem- 
solving, creativity, and verbal 



hi^*.^'."...". ».'..".. ..J 



communication. By John <rutch. 

Ask for No. 21785 $9 95 

Now Only $7.96 



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DON LANCASTER'S 
MICRO COOKBOOK, 
Volume 1 

Includes ground-zero basics, a 
real-world set of rules for the 
novice, pragmatic number sys- 
tems and logic, usable codes, 
memory, and memory devices, 
all dedicated to helping you 
profit from and enjoy comput- 
ing. By Don Lancaster. 
Ask for No. 21828 SI 7.95 

Now Only $14.36 




CHEAP VIDEO COOKBOOK 

Shows you how to build and use 
a $20, seven-IC circuit that lets 
your connputer provide any alpha 
or graphics format, including 
hi-res and a four-color mode, via 
software control. There's more, 
too. By Don Lancaster 
Ask for No. 21524 $7 95 

Now Only $6.36 

SON OF CHEAP VIDEO 

Gives you do-it-yourself specs for 
a low-cost, custom EPROfvl char- 
acter generator, plus lowercase 
for an Apple II, cheap video for 
8080/2-80, complete video dis- 
play for $7, and more. By Don 
Lancaster 

Ask for No. 21723 $10.95 

Now Only $8.76 

BUSINESS 
PROGRAMMING 



■ASiC 




BASIC BUSINESS SOFTWARE 

Explains the fundamentals of 
application software for busi- 



ness, how to evaluate it, and 
how to write it. Covers informa- 
tion storage and retrieval, inven- 
tory control, payroll, and general 
ledger programming. By E. G. 
Brooner 

Ask for No. 21751 . $11 95 
Now Only $9.56 




15. 



WORD PROCESSING 
FOR SMALL BUSINESSES 

Tells you about doing practical 
word processing on a personal 
computer, and presents details 
for more than 50 word- 
processing systems, including 
hardware, software, and more 
By Steven F Jong. 
AskforNo. 21929. ... $11 95 
Now Only $9.56 



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MICROCOMPUTER 
DATABASE MANAGEMENT 

Create your own database pro- 
gram! Complete tutohal shows 
routines you can use to control 
and access large amounts of 
data with a microcomputer. Also 
explains operation of 3 commer- 
cial D/B programs. By E. G. 
Brooner. 

AskforNo. 21875 $12 95 

Now Only $10.36 






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USING COBOL IN 
AN MP/M® SYSTEM 

Shows you how to use COBOL 
with a multiple-terminal CP/M 
system so that more than one 
user can access the same file at 
the same time without interfer- 
ence. Describes system design 
and more. By Neil G. Gelb. 
AskforNo. 21936 .. $12.95 
Now Only $10.36 




COMPUTER PROGRAMS 
FOR MACHINE DESIGN 

Ready-to-use BASIC programs to 
help mechanical and material 
engineers, machinists, techni- 
cians, and students solve the 
everyday problems they meet in 
machine technology. By Robert J. 
Wenzei. 

AskforNo. 21960 $21.95 

Now Only $17.56 

GENERAL INTERFACING 

ANALOG ELECTRONICS f| | 
FOR MICROCOMPUTER X3. 
SYSTEMS 

Useful desktop reference cover- 
ing power supply design, analog 
signal conditioning, data acguisi- 
tion principles, data communica- 
tion links, PID control, and other 
material necessary to microcom- 
puter interfacing. By Paul 
Goldsbrough, Trevor Lund, and 
John Rayner. 

Ask for No. 21821 . $19.95 
Now Only $15.96 



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COMPUTER 

COMMUNICATION 

TECHNIQUES 

Covers data transfer techniques, 
hardware matching, standards 
and protocols, networking, vid- 
eotex, teletext, software, and 
what's necessary to use them. By 
E G. brooner and Phil Wells 
A5k for No. 21998 $15 95 

Now Only $12.76 



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THE WORLD CONNECTION 

Powerful information that shows 
you how to select and use a 



CIRCLE 32 ON FREE INFORMATION CARD 



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modem for sending and receiv- 
ing electronic mail, making use 
of CompuServe and The Source, 
using electronic bulletin boards, 
and more. By Timothy Orr 
Knight. 

Ask for No. 22042 S9 95 

Now Only $7.96 




THE S-100 AND OTHER 
MICROBUSES 

Discusses microcomputer bus 
systems in general, examines 21 
of the most popular ones, and 
explores ways to interface any 
two of them. By Elmer C. Poe 
and James C. Goodwin II. 

Ask for No. 21810 S9.95 

Now Only $7.96 




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STD BUS INTERFACING 

Gives you all information and 
circuitry needed to interface 
your STD bus system easily Much 
assembly language software in- 
cluded for Z-80, 8080/8085, 
6502, and 6800-based boxes. By 
Christopher A. Titus, Jonathan A. 
Titus, and David G. Larsen. 
Ask for No. 21888 $13.95 

Now Only $11.16 

APPLE® PROGRAMMING 

& INTERFACING 




POUSHING YOUR APPLE 
Volume 2 

Guides intermediate-level pro- 
grammers in making finished, 
commercially salable products. 
Demonstrates menu techniques, 
error-trapping, making your pro- 
grams run smoothly, and more. 
By Herbert M. Honig, 
Ask for No. 22160 $4 95 

Now Only $3.96 



DISKS, FILES, AND 
PRINTERS FOR THE 
APPLE II 

Provides you with outstanding 
explanations for Apple pro- 
gramming with sequential- 
access, random-access, and 
executive files, plus basic-to- 
advanced details for using disks 
and printers. By Brian D. 
Blackwood and George H. 
Blackwood. 

Ask for No. 22163 ... $15.95 
Now Oniy $12.76 



II. 



APPLE 11 
APPUCATIONS 

Real-world interfacing applica- 
tions that can be modified to fit 
your needs. Includes serial and 
parallel I/O boards, EPROM or 
E'PROM boards, remote data 
acquisition system, and more. By 
Marvin L. De Jong. 
Ask for No. 22035 $1595 

Now Only $12.76 



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APPLESOFT™ LANGUAGE 

(2nd Edition) 

The only complete Applesoft 
manual on the market, now with 
new materia! covering disk oper- 
ations plus additional detail on 
numbers and number pro- 
gramming. Many usable routines 
and programs, too, 6y Brian D. 
Blackwood and George H. 
Blackwood. 

Ask for No. 22073 $13.95 

Now Only $11.16 

POUSHING YOUR APPLE 
Volume 1 

Clearly written, highly practical, 
concise assembly of all proce- 
dures needed for writing, disk- 
filing, and printing programs 
with an Apple II. Positively ends 
your searches through endless 
manuals to find the routine you 
need! By Herbert M. Honig. 
Ask for No. 22026 $4 95 

Now Only $3.96 




ENHANQNG YOUR 
APPLE II, Volume 1 

Shows you how to mix text, 
LORES, and HIRES anywhere on 
the screen, how to open up 
whole new worlds of 3-D 
graphics and special effects with 
a one-wire modification, and 
more. Tested goodies from a 
trusted Sams Author! By Don 
Lancaster 

Ask for No. 21846 SI 7 95 

Now Only $14.36 




APPLE II ASSEMBLY 
LANGUAGE 

Shows you how to use the 
3-character. 56-word vocabulary 
of Apple's 6502 to create power- 
ful, fast-acting programs! For 
beginners or those with little or 
no assembly language pro- 
gramming experience. By Marvin 
L. DeJong 

AskforNo. 21894 . $15.95 
Now Only $12.76 

MOSTLY BASIC: 
APPUCATIONS FOR YOUR 
APPLE II, Book 2 

Now. a second goldmine of fas- 
cinating BASIC programs for 
your Apple II, featuring 3 dun- 
geons, 1 1 household programs, 
5 on money or investment, 2 to 
test your ESP level, and more — 
32 in all! By Howard Berenbon. 
Ask for No. 21864 $12.95 

Now Only $10.36 

MOSTLY BASIC: 
APPUCATIONS FOR YOUR 
APPLE 11, Book 1 

An assortment of 28 useful and 
ready-to-use Applesoft pro- 
grams including a telephone di- 
aler, a spelling test, house- 
buying guide, gas mileage cal- 
culator, and many more. 8y 
Howard Berenbon. 
Ask for No. 21789 . . $13 95 
Now Only $11.16 




THE APPLE II CIRCUIT 
DESCRIPTION 

Provides you with a detailed cir- 
cuit description of all Apple II 
motherboards, including the 
keyboard and power supply. 
Comes complete with timing 
diagrams for major signals and a 
discussion of differences be- 
tween the various revisions By 
Winston D. Gayler. 
Ask for No. 21959 $22 95 

Now Only $18.36 

ATARI® PROGRAMMING 
& INTERFACING 




MOSTLY BASIC: 
APPUCATIONS FOR YOUR 
ATARI, Book 1 

Thirty-eight fascinating and use- 
ful Atari BASIC programs you can 
run on any Atari 400, 800, or 
1200XL computer! Includes a 
bar-chart generator, IRA planner, 
message taker, medical expense 
recorder, and many more By 
Howard Berenbon. 
Ask for No. 22075 $12 95 

Now Only $10.36 

COMMODORE 
PROGRAMMING & 
INTERFACING 

COMMODORE SOFTWARE 
ENCYCLOPEDIA 

(3rd Edition) 

Giant, comprehensive Third Edi- 
tion directory of software for the 
entire line of Commodore mi- 
crocomputers, including the VIC 
20 and Commodore 64, Covers 
games, business, education, and 
much more. By Commodore 
Computer, 

Ask for No. 22091 $19 95 

Now Only $15.96 



CIRCLE 32 ON FREE INFORMATION CARD 



tOdWOOOMJ*- 






COMMODORE 64 
PROGRAMMER'S 
REFERENCE GUIDE 

This creative programmer's work- 
ing tool for the Commodore 54 
includes a complete, detailed 
dictionary of all Commodore 
BASIC commands, statements, 
and functions, followed by 
BASIC program samples showing 
how each item works, and 
much, much more! By Commo- 
dore Computer, 

Ask for No. 22056 $19.95 

Now Onfy $15.96 

COMMODORE 64 
USER'S GUIDE 

Shows you how to set up, pro- 
gram, and operate your Com- 
modore 64, including how to do 
arcade-type color animation, 
music, and sound effects. Same 
book that comes packed with 
every Commodore 64 computer! 
By Commodore Computer. 
Ask for No. 22010 ... . $12 95 
Now Only $10.36 




VIC 20 PROGRAMMERS 
REFERENCE GUIDE 

An easy-to-use, detailed manual 
that helps you program your VIC 
20 like a pro in either BASIC or 
machine language! Includes a 
special section on VIC 20 1/0 op- 
erations, too. By Commodore 
Computer. 

Ask for No. 21948 $16.95 

Now Only $13.S6 

MOSTLY BASIC: 
APPLICATIONS FOR 
YOUR PET®, Book 2 

A second collection of ready-to- 
run BASIC programs that in- 
cludes three dungeons, eleven 
household programs, seven on 
money and investment (three of 
which are on the stock market), 
two that test your ESP level, and 
morel Thirty-seven in all, By 
Howard Berenbon, 
Ask for No. 22001 $13 95 

Now Only $11.16 



MOSTLY BASIC: 
APPLICATIONS FOR 
YOUR PET* Book 1 

Contains 28 useful BASIC pro- 
grams for home, business, and 
entertainment. Includes a tele- 
phone dialer, spelling test, house 
buying guide, gas mileage cal- 
culator, and more. By Howard 
Berenbon, 

Ask for No. 21790 $13 95 

Now Only $11.15 

IBM® PROGRAMMING & 
INTERFACING 

INTERFACING TO THE IBM 
PERSONAL COMPUTER 

Written by the lead designer and 
architect of the IBM PC itself, this 
authoritative, single-volume 
presentation gives you detailed 
technical data and operational 
theory for interfacing the IBM 
PC with a variety of hardware 
and software. By Lewis C, 
Eggebrecht, 

Ask for No. 22027 $17 95 

Now Only $14.36 




MOSTLY BASIC: 
APPLICATIONS FOR YOUR 
IBM PC, Book 1 

Brings you 38 chapters filled 
with useful and entertaining 
BASIC programs for your home 
and office. Helps you save money 
on energy usage, bar-chart your 
business sales, dial the tele- 
phone, learn a foreign language, 
and more. By Howard Berenbon, 
Ask for No. 22076 $12 95 

Now Only $10.36 

MOSTLY BASIC: 
APPLICATIONS FOR YOUR 
IBM PC, Book 2 

A second collection of 32 as- 
sorted programs in IBM BASIC 
you can use wherever you use 
your IBM PC, includes a math 
dungeon, two memory challen- 
gers, a student grader, a phone 
directory, monthly budget, and 
much more. By Howard Beren- 
bon. 

Ask for No. 22093 $14 95 

Now Only $11.96 



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USING YOUR IBM 
PERSONAL COMPUTER 

Part One gets you started with 
off-the-shelf programs, and 
shows you how to use the PC's 
system hardware. Part Two 
teaches you to program in PC 
BASIC, and includes graphics, 
music, sound effects, and more. 
Fully indexed and illustrated. By 
Lon Poole. 

Ask for No. 22000 $16.95 

Now Only $13.56 




8088 ASSEMBLER LAN- 
GUAGE PROGRAMMING: 
THE IBM PC 

Shows you how to program the 
PC with 8088 assembler lan- 
guage Includes a complete 
functional description of the 
8088 microprocessor, plus a de- 
tailed analysis of the IBM PC 
architecture and how to make 
full use of it, 8y David C. Willen. 
Ask for No. 22024 , , $15,95 
Now Only $12.76 

TEXAS INSTRUMENTS 
PROGRAMMING & 
INTERFACING 

THE TI99/4A® USER'S 
GUIDE 

You'll like this badly needed 
guide to all aspects of the Tl 
99/ 4A! Covers everything from 
system setup to expansion op- 
tions, including languages, 
software, and peripherals. By 
Carol Ann Casciato and Donald J, 
Horsfall, 

Ask for No. 22071 $10 95 

Now Only $8.76 

TIMEX SINCLAIR 
PROGRAMMING & 
INTERFACING 

TIMEX SINCLAIR 
1000™/ZX81 USER'S 
HANDBOOK 

Keep this handy as a useful ref- 
erence source and you'll have 
most of the answers you'll ever 



need on hardware and 
peripheral details, interfacing, 
machine-code programming, 
and possibly troublesome areas 
of BASIC. By Trevor J. Terrell and 
Robert J. Simpson, 
Ask for No. 22012 , ,, $13.95 
Now Only $11.16 




TIMEX SINCLAIR 
1000"'/ZX81 BASIC BOOK 

Neatly and effectively teaches 
ZX81 BASIC language, in- 
structions, and programming 
techniques to owners of the 
ZX81 personal computer In- 
cludes many examples and exer- 
cises. By Robin Norman. 
Ask for No. 21957 , $12 95 
Now Only $10.36 

TRS-80® 

PROGRAMMING & 
INTERFACING 

TRS-80 FOR KIDS FROM 8 
TO 80, Volume 2 

Assumes you've either read Vol- 
ume 1 or are familiar with its 
concepts. Covers new topics but 
also gives new detail on material 
from Volume 1, and includes 
many helpful programs, hints, 
and techniques. By Michael P. 
Zabinski. 

Ask for No. 22070 $9 95 

Now Only $7.96 




LEARNING AND TEACHING 
PROGRAMMING USING 
THE TRS-80 MODEL III 

Makes it possible for parents and 
teachers of elementary-aged 
children to become computer 
literate enough to teach 
gradeschoolers the subject using ■ 
Computer Aided Instruction. By 
Nancy Lee Olsen, 
Ask for No. 22072 ., . $10,95 
Now Only $8.76 



O 
m 

3 



CIRCLE 32 ON FREE INFORMATION CARD 



105 



o 

z 
o 

(r 

UJ 




BATTLESTAR BASIC FOR 
THE TRS-80 

You construct an arcade-type 
video game program from 
scratch, using (and learning) new 
BASIC statements and com- 
mands as they become necessary 
to make the game gradually 
more complex and sophisticated. 
By David H. Dasenbrock. 
Ask for No. 22006 $14 95 

Now Only $11.96 



TRS-sq 

FOR Ig -1 



TRS-80 FOR KIDS FROM 8 
TO 80, Volume 1 

Amazingly effective information 
suitable for beginning TRS-SO 
programmers of any age, espe- 
cially youngsters. No special 
background is needed. Same 
principles used at National Com- 
puter Camp help you learn 
quickly and easily. By Michael R 
Zabinski- 

Ask for No. 22046 $9 95 

Now Only $7.96 




TRS-80 COLOR COMPUTER 
INTERFACING, WITH 
EXPERIMENTS 

Teaches you the interfacing 
techniques, inner workings, and 
operation of the TRS-80 Color 
Computer and its high- 
performance 6809 microproces- 
sor Shows how you can control 
and monitor various equipment 
and events. By Andrew C. 
Staugaard, Jr. 

Ask for No. 21893 $14 95 

Now Only $11.96 




TR5-80 MODEL I, III, 
AND COLOR COMPUTER 
INTERFACING PROJECTS 

A unique book for beginning in- 
terfacers which includes 14 sim- 
ple, useful, and easy-to-build 
construction projects to fielp you 
make use of your TRS-80 model 
1 , 3, or Color Computer in the 
real world. By William Barden, Jr 
Ask for No. 22009 $ 14 95 

Now Only $11.96 

MOSTLY BASIC: 
APPUCATIONS FOR YOUR 
TRS-80, Book 2 

Mow, a second goldmine of fas- 
cinating BASIC programs for 
your TRS-80, featuring 3 dun- 
geons, 1 1 household programs. 
6 on money or investment, 2 to 
test your ESP level, and more^ 
32 in all! By Howard Berenbon. 
Ask for No. 21865 , J12 95 
Now Only $10.36 

MOSTLY BASIC: 
APPUCATIONS FOR YOUR 
TRS-80, Book 1 

Brings you 28 ready-to-use 
BASIC programs for your TRS-80, 
including a telephone dialer, 
spelling test, house buying 
guide, gas mileage calculator, 
and more By Howard Berenbon, 
Ask for No. 21788 $1295 

Now Only $10.36 

THS-80 ASSEMBLY 
LANGUAGE [j 1 

MADE SIMPLE Xj. 

Learn how to plan, write, and 
hand-assemble your own as- 
sembly language programs in 
memory, using the T-BUG and 
Level II BASIC ROM subroutines. 
Provides immediate, short-cut 
results for the user who can sim- 
ply use existing routines. By 
Earles McCaul. 

Ask for No. 21851 $12 95 

Now Only $10.36 



16-BiT MICROPROCES- 
SOR PROGRAMMING & 
INTERFACING 




16-BIT MICROPROCESSORS 

Carefully steps you through the 
complexities of programming 
and designing with powerful 
16-bit microprocessors. Covers 
the 68000, 8086, Z800W2, 
9900, and NS16000. By Christo- 
pher A. Titus, Jonathan A. Titus, 
Alan Baldwin, W. N. Hubin, and 
Leo Scanlon 

Ask for No. 21805 . . $ 1 5.95 
Now Only $12,76 




THE 68000; PRINCIPLES 
AND PROGRAMMING 

Systematically guides you 
through the 68000's complex 
architecture, instruction set. 
pinouts, and interfacing tech- 
niques. Excellent for design 
engineers, programmers, and 
students. By Leo J, Scanlon. 
Ask for No. 21853 .. $15.95 
Now Only $12.76 

6502 MICROPROCESSOR 
PROGRAMMING & 
INTERFACING 



sofTWua 

DESIGN 




6502 SOFTWARE DESIGN 

Shows you how to place the 
powerful 6502 under assembly 
language program control. Con- 
tains 88 debugged and usable 
sample programs, and a wealth 
of additional material. By Leo J. 
Scanlon 

AskforNo. 2165S $13 95 

Now Only $11,16 




PROGRAMMING AND 
INTERFACING THE 6502, 
WITH EXPERIMENTS 

Good any time, but excellent If 
you don't have much 6502 as- 
sembly language programming 
or chip-level interfacing experi- 
ence. Simple I/O techniques, in- 
structions, and interfacing that 
can be reinforced by a KIM, 
SYM, or AIM system. By Marvin 
L. DeJong. 

Ask for No. 21651 $17.95 

Now Only $14.36 

6800 MICROPROCESSOR 
PROGRAMMING & 
INTERFACING 




6809 MICROCOMPUTER 
PROGRAMMING AND 
INTERFACING, WITH 
EXPERIMENTS 

Instructional text and applica- 
tions handbook giving you a 
solid understanding of the 6809 
high-performance chip Covers 
all aspects and includes much 
software. By Andrew C. 
Staugaard, ir. 

Ask for No. 21798 .... $14.95 
Now Only $11 .96 



106 



CIRCLE 32 ON FREE INFORMATION CARD 







HOW TO PROGRAM 
AND INTERFACE THE 6800 

Introductory tutorial to 
Motorola's popular 6800, em- 
phasizing real-world applica- 
tions. Covers internal structure, 
instruction set, programming, 
hardware, and interfacing tech- 
niques. Many experiments! By 
Andrew C, Staugaard. ir. 
Ask for No. 21684 $15 95 

Now Only $12.7fi 

8080/8085 MICRO- 
PROCESSOR PROGRAM- 
MING 8i INTERFACING 

8085A COOKBOOK JJ. 

A design-it-yourself guide to 
basic microcomputing concepts 
for the S085A microprocessor 
and its family-compatible chips. 
Helps you design a number of 
completely operational, 80S5A- 
based microcomputers. By 
Jonathan A. Titus, David G. Lar- 
sen. and Christopher A Titus. 
Ask for No. 21697 $15 95 

Now Onty $12.76 



8080/8085 
MICROPROCESSOR 
PROGRAMMING & 
INTERFACING 




8080/8085 SOFTWARE 
DESIGN, Book 1 

Gives you a thorough and de- 
tailed look at programming in 
assembly language for the 8080 
or 8085 microprocessor. Includes 
a complete discussion of the 
8080/8085 instruction sets and 
interfacing techniques. By David 
G. Larsen, Jonathan A. Titus, and 
Christopher A. Titus. 
Ask for No. 21 541 $13,95 

Now Only $11.16 



Z-80 MICROPROCESSOR 
PROGRAMMING 8t 
INTERFACING 

Z-80 MICROPROCESSOR 
ADVANCED INTERFACING 
WITH APPLICATIONS IN 
DATA COMMUNICATIONS 

Helps you learn to exchange in- 
formation and access data bases 
all over the world, using a system 
based on the Z-80 or almost any 
other 8- or 16-bit microproces- 
sor. Includes much portable 
software. By Joseph C. Nichols. 
Elizabeth A. Nichols, and Keith 
A. Musson. 

Ask for No. 22003 . $19 95 
Now Only $15.96 



'«^ 




Z-80 MICROCOMPUTER 
HANDBOOK 

Acquaints you with the 
hardware of the Z-80 and dis- 
cusses its software aspects, in- 
cluding use of machine and 
assembly language. Also looks 
at the microcomputers using 
that chip. By William Barden, Jr 
Ask for No. 21 500 .. $13.95 
Now Only $11.16 



u. 



Sug symbol ts a registered trademark of The BJacksburg Group. Inc.. 
and denotes those books in the BlBcksburg Continuing Education Series. 



Apple II and Apple II Plus are registered trademarks of Apple Computer, Inc. 
IBM is a registered trademark of International Business Machines, Inc 



TRS-80 is a registered trademark of Radio Shack, a Tandy Corporation 

PET is a registered trademark of Commodore Business Machines. 

CP/M and MP/M are registered trademarks of Digital Research, Inc. 

UCSD is a trademark of UC Regents, San Diego campus. 

Timex/Sinclair 1000 is a registered trademark of Timex Computer Corporation, 



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In Canada, contact Lenbrook Electronics, Markham, Ontario L3ft 1H2. 



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Howard W. Sams & Co., Inc., 4300 W. 62nd St., RO, Box 7092, Indianapolis, Indiana 46206 



CIRCLE 32 ON FREE INFORMATION CARD 



O 
□s 
m 

IDS 



THE FIRST LOW COST 6502 COMPUTER WITH 48K RAM THAT'S COMPLETELY COMPATIBLE WITH APPLE II® 



>■* at a price that's easier 
on your finances. The RT'2 will run ali software and use all peripheral hardware designed for the Apple II + .* It's 100% Apple*^ 




on RT 2 



Introducing the RAM-TECH*ffr 2 computer which offers you greater flexibility than the Apple li- 
on your finances. The RT 2 will run all software and use all peripheral ' 
compatible yet it offers you features not available on the Apple II ■ 

COMPARE THESE FEATURES: 

— supports upper & lower case characters from the keyboard 

— high quality ABS case will not crack and is light weight 
~ RF modulator included in addition to composite video output 

— high quality light-touch iceyboard with upper/lower case key 

— 15 key numeric key pad for fast data entry (optional) 

— high power switching power supply (8.5 amps total) wiil power two 
disk drives and several peripherals easily, has internal circuit breaker 

— eight expansion slots to increase flexibility with peripheral cards 

— 48K RAM expandable to 64K (192K RAM upgrade card available soon 

— socketed IC's for quick and easy sen^ice 

— thousands of programs (business & home) available 

— operates identically to the Apple II + * with exception of extra features 

— full 90 days parts and labor warranty with fast service turn-around 

THE RAH-TECH' fl7 2 IS EVERYTHING YOU ALWAYS WANTED FROM AN APPLE* (AND MORE), BUT THOUGHT YOU COULDN'T AFFOHO. AND THAT'S GOOD MEWSl 
BUT THE BEST NEWS IS THE PRICE: WITH OPTIONAL NUMERIC KEYPAD: 

$525.00 + $18,00 shipping & handling $575.00 + $18,00 shipping & handling 

COMPARED TO APPLE 11® WHICH RETAILS AT MORE THAN DOUBLE THIS PRICE AND OFFERS YOU LESS, YOU CAN SEE WHY 
THE RAM-TECH* RT 2 SHOULD BE YOUR CHOICE. MAKE NO SYNTAX ABOUT IT, THE RT 2 IS FOR YOU! 

PERSONAL I.D. OPTION — We win bum your name into ROM. when you power up your Ram-Tech your name win be displayed 
on the screen. AN EXTRA MEASURE OF SECURITY AGAINST THEFT. 

Indicate on your order what name you wish to use (maximum 8 letters including spaces) — ADD: $25.00 for I.D. option. 

ALSO AVAILABLE: (sub-assemblles for do-it yourselfers) — 90 days warranty 

1 - ABS case, high quality, Apple" look-a-like and color matched, will replace Apple"^ case $ 68.50 

2 - same as #1 above but with numeric keypad cutout $ 84.00 

3 - keyboard with upper/lower case key, direct replacement for Apple® or Ram-Tech* $1 10.00 

4 - same as #3 above but with numeric keypad, use in combination with #2, also fits Apple® $139.50 

5 - RF modulator with TV switch and cable, also fits Apple® .,...$ 19.50 

6 - switching power supply, 8.5 amps, internal circuit breaker, high power, also fits Apple® $112,00 

7 - motherboard, completely assembled & tested, fully operational with burned ROMS , ,$295.00 

8 - bare motherboard w/ parts discription screened on board and instructions, highest quality G10 epoxy $ 48,00 

SHIPPING & HANDLING FOR ABOVE: cases #1 & 2 sdd 10%; all others add 5% 

PERIPHERALS, CARDS & ACCESSORIES FOR YOUR RAM-TECH* OR APPLE® 

all items #1 to 19 guaranteed for one year (disk drives for six months) 

1 - 16K RAM card , $ 58.00 

2-80 column card $ 94.50 

3 - clock card , .. , $135.00 

4 - communications card $ 89.00 

5 - disk controller card $ 58.00 

6 - EPROM writer card $124.50 

7 - FORTH card $ 98.50 

8 - IEEE-488 card w/cable $186.00 

9 - parallel printer card w/cable $112.00 

10 - parallel printer buffer and grappler card with cable. . . 

DISK DRIVES: Guaranteed high quality for use with all Apple® compatible (or Ram-Tech*) controllers - DOS 3.3 & 3.2 
USES SPECIAL LOW POWER CONSUMRXION CIRCUITRY 



1 1 - interger card $ 97.50 

12 - PAL card $114.00 

1 3 - language card $ 72,50 

14 - RS-232 serial card $ 84.00 

15 - 2-80 CP/M card .$ 92.00 

16 - VERSA card $345.00 

17 - analog/digital card $116.50 

18 - system cooling fan $ 63,00 

19 - joy stick w/button $ 24.50 

$245.00 



TEAC 55A. 
SHUGART . 



,$325.00 
. $285.00 



SHIPPING & HANDLING: add $3.50 per item #1 - 19 . 



$370.00 with controller 

$330.00 with controller 

. disk drives add $10.00 



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fc 



CIRCLE 5 ON FREE INFORMATION CARD 



B 
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B 


'SLIW '""""* 




^KU 


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% 





uampuLBP^ 

S1000-$1500 



^ 



-^=5il- 



Some big-name and some 

new-name manufacturers 

join ttie list of companies we 

have already mentioned. 



^lOOO to ^1500 



MARC STERN 



BY NOW YOU ARt£ PROBABLY WONDERING WHERE ALL THE "BIG 

names" in the microcomputer industry are hiding. Weil, this 
price category answers tliat question as such giants as IBM, 
Apple, and Heath join the parade of small-computer man- 
ufacturers. 

At the same time, another Apple-compatible computer makes 
its debut, the /4«-series from Frankiin Computer Corp. , which 
has been the subject of controversy, but whose way seemingly 
has been cleared thanks to recent court actions. And, another 
system debuts from a manufacturer whose name has long been 
associated with consumer electronics: Sony. 

New systems debut from manufacturers whose names we are 
familiar with. Atari has a new system as does NEC Home 
Electronics and Commodore Business Machines. 

Meanwhile, systems launched in the lower-price categories 
begin to either become fuliy configured or take on new power 
and become much more versatile. 

Let's start our exploration of this price category with the new 
entries on the block, moving on to the new entries from those 
manufacturers we have already met, and wrap it up with looks at 
how already-described systems take on new configurations, 

IBM 

Two key changes have occuired during the la.si 12 months. 
First, IBM increa.sed the amount of u.ser memory from I6K to 
64K in the basic unit and second, the compmer giant has drop- 
ped a standard cassette interface. 

At this point in its life, the IBM Personal Computer is little 
more than the system box, motherboard, 64K of user memory, 
and the 83-key keyboard that boasts 10 function keys. However. 
this is the beginning of a truly powerful system. 

Capable of interfacing with a home television set — providing 
the user opts for the correct monitor-interface board — -the IBM 
PC is driven by a 16-bit 8088 microprocessor. This gives it the 



ability to handle up to 1.2 megabytes of RAM and, further, it 
also has the ability to handle complex applications program- 
ming. 

In reality, these capabilities are reserved for higher price 
classes. 

Franklin 

Franklin was the perhaps the first domestic computer manu- 
facturer to enter the highly lucrative Apple-compatible market 
last year with its Ace. It continues to market the Ace 1000 this 
year and has expanded its offerings, as you will see in other price 
categories.' 

The Ace 1000 is driven by an 8-bit 6502 microprocessor, the 
same micro that drives the venerable Apple U series. This small 
computer comes with 64K of user memory that makes it capable 
of highly complex applications. It also features a cas.sette in- 
terface for mass storage and is programmable in BASIC. 

The Ace 1000 features a full, typewriter-style keyboard with 
72 keys and a 12-key numeric keypad. This feature, alone, 
makes this machine very usable and should enable quick data or 
program entry by a .skilled typist. 

The Ace 1000 is capable of 40-character by 24-line text 
display and 280- by !92-dol graphics resolution. 

Although it is the basic Ace 1 000 system, it is still a capable 
unit, whose functionality grows as we add more peripherals to it- 
For instance, the Ace 1000 becomes more versatile in this price 
category with the addition of a fioppy-disk drive that uses an 
Apple-compatible disk operating system. 

Apple 

Apple Computer, one of the long-time leaders in the 
microcomputer market, apparently knew it had a good thing on 
its hands with the Apple II and Apple 1 1 -PI us and so rather than 
phasing out this long-lived series, the company upgraded ii to 



01 

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TABLE 1—$1000-$1500 



I 


1 Manufacturer 


Model 


Price 


CPU 


Word Length 


Operating System 


Languages ' 


^ 


[ 


Atari Products 


1400XL 


$1000 
(est.) 


6502C 


8-bit 


N/A 


BASIC 


H 


1 


h~ 


1450XLD 


$1000 
(est.) 


65020 


8-bit 


Atari DOS III 


BASIC 




r 


Texas Instruments 


T1-99/4A 


$1009 


TMS9900 


16-btt 


N/A 


BASIC 






Commodore Business 
Macliities 


Commodore 64 


$1018.95 


6510 


8-bi1 


N/A 


BASIC 




k 


Formula J"|^'f,",?,*ioff,?|^^^ 


^Pine^|Ukit^^ 


S1029 


6502 


8-bit 


N/A^^^ 


Not announced 


1 


1 


iPanasonic Co, 


H1800 


$1038 


6502 


8-bit 


SNAP 


BASIC 






Toshiba America 


11 00 


$1050 


Z80A 


8-bit 


N/A 


BASIC 




; 


Radio Shacl( 


TRS-80 Model III 


$1059 


Z80 


8-bit 


N/A 


BASIC 




L 


Spectravldeo 


SV-318 


$1079 


Z80A 


8-tjit 


N/A 


BASIC 

1 


^ 


^ 


i Commodore Business 
P Machines 


BX256-80 


$1095 


6509/8088 


a/ie-bit 




BASIC J 


^ 




Franklin Computer Corp. 


Ace 1000 


$1095 


6502 


8-bit 


N/A 


BASIC 




■ 


Radio Shact( 

\ 


TRS-80 Model 
100 


$1118 


80C85 


8-bit 


N/A 


BASIC 




L 


Sord Computer c/o Mitsui 


Ivl23 


$1120 


Z80A 


8-bit 


Proprietary, CP/M- 
compatible 


BASIC, Pascal, 
FORTRAN 




^ 


tTexas Instruments 


TI-99/4A 


$1135 


TMS9900 


16-bit 


N/A 


BASIC 




r 


Casio, Inc. 


FX-9000P 


$1144 


Z80A-compatible 


8-bit 


Not announced 


BASIC 




f 


L- Radio Shacic 


TRS-80 Color 
Computer 


$1148 


6809E 


8-bit 


Proprietary 


BSIC 




t 


Commodore Business 

Machines 


VIC-20 


$1152.80 


6502 


8-bit 


Proprietary 


BASIC 




n 


L Formula International 


Ptnecom (l<lt) 


$1154 


6502 


8-bit 


N/A 


No anounced 




t_ 


Radio Shack 


TRS-80 Pocket 
Computer PC-2 


$1179.20 


Custom CMOS 


8-bit 


N/A 


BASIC 


1 


P 


L Panasonic Co. 


HI 400 


$1188 


6502 


8-bit 


SNAP 


BASiC 




L 


NEC Home Electronics 


PC-8800 


$1199 


Z80A-compatible 


8-bit 


N/A 


BASIC 




p 


tSpectravideo 


SV-328 


$1200 


Z80A 


8-bit 


N/A 


BASIC 




' 


Radio Shack 


TRS-80 Model 111 


$1207 


280 


8-bit 


N/A 


BASIC 


^ 


0) 

'.■ZL 

o 


Radio Shack 


TRS-80 Model III 


$1255 


Z80 


8-bit 


N/A 


BASIC 




Atari Products 


1200XL 


$1268 


6502 


8-blt 


Atari DOS 111 


BASIC 






Netronics Research 


Explorer/88-PC 


$1284.48 


8088 


16-bil 


N/A 


machine/BASIC 




^E 









fO Panasonic Co. 



*1Z 



H1800 



$1288 6502 



8-bi! 



SNAP 



BASIC 



A 



r 


Memory /Storage 


Keyboard 


I/O 


Display 


Comments 


i 


64K/cartridge slot 


66 keys, 4 special func- 
lion, 4 programmable, 
12 preprogrammed 


1 serial, 2 controller, ex- 
pansion connector, 
modem, speech syn- 
thesizer 


256 colors, 40 x 24 text " 


b^ic sy6tdrlrt 


i 


64K1 slim line 254KDS 
DD drive 


66 keys, 4 special func- 
tion. 4 programmable, 
12 preprogrammed 


1 serial, 2 controller, ex- 
pansion connector, 
modem, speech syn- 
thesizer 


256 colors, 40 x 24 text 


basic system 

1 




48K/cassette interface 


standard 


1 serial. HEX-BUS ex- 
pansion unit, peripheral 
interface 


16 colors 


serial port 




64K.'cassette recorder 


60 keys. 4 program- 
mable 


1 serial 


14-inch high-res. dedicated 

color monitor 


color monitor, serial porl 


» 


48K 


66 keys. U-key keypad 


1 parallel 


80-column text 
capability/280 x 192 
graphics 


60-co)umn video card 




16K 


65 oaiculator keys in 
typewriter arrangement, 
red etin able 


inpul/output adapter/ex- 
pansion bus 


1-line X 26-character liq- 
uid crystal display 


memory expanded to 16K 




64K/cassette Interface 


89 keys, 8 special func- 
tton 


1 parallel, 1 serial 


80 X 25 monochrome 


monitor 




16K;cassette recorder 


64 keys, 12-key keypad 


1 parallel 


12- inch monochrome/64 
(32) X 16 text mode 


cassette recorder 


1 


64K/cassette recorder 


71 keys, 10 program- 
mable, buitt-in joystick 


1 seriai, 1 parallel 


256 X 192 resolution, lb 
colors, television used as 
display 


serial, parallel ports added, 
memory upgraded, expan- 
sion interface 




256K 


standard, numeric key- 
keypad 


1 serial 


12-nch monocnrome 
CRT/80 X 25 text 
mode 


Dasic system, dual pro- 
cessors 



64K/cassette interface 



72keys,12-key keypad gamecontroller 



32K/cassette interface 56 keys, ernbedded 10- 

key keypad, 8 program- 
mable 



1 parallel, 1 senal, buiit- 
In modem 



40 X 24/280 X 132 graph- 
ic capability 

40 X 8 liquid crystal flis- 
play 



basic system 



memory expanded to 32K 





128K 


59 keys, 20-key keypad. 
9 special function 


Not announced 




basic system j 




48K'cassette interface 


standard 


1 serial, 1 parallel HEX- 
BUS expansion unit, pe- 
ripheral interface 


16 colors 


parallel port 


1 


8k cassette interface 


67 keys, 16-key keypad 




5.5-inch, 32 X 16 mono- 
chrome, 256 X 128 
graphics 


4KRAIWI 

i 




32K.1 156K 5 >i" floppy 
disk drive 


53 keys 


1 serial 


'6Z X 16 color text 
mode/256 x 192 graphics 
capability 


156K drive 


1 


29K/1170K 5 W floppy 
disk drive 


66 keys. 4 user- 
programmable 


1 serial 


14-inch high-res. dedicated 
color monitor 


color monitor, 170K (loppy 

disk drive and serial i 

port 




48K 


66 keys, 14- key keypad 


1 parallel 


9-inch monochrome 
CRT/280 X 192 graph- 
ics/80 column capability 


monochrome monitor 


p 


32K/cassette interface 


65 calculator keys, 19- 
key keypad, 16 defina- 
ble 


60 pin bus connector/ 
RS-232C interface 


1 line 7 X 156 dot matrix 
liquid crystal display 


r.ommijnicalion.'; interface 

j 




22K 


65 calculator keys in 
typewriter arrangement, 
redefinabie 


ihput'butput adapter/ex- 
pansion bus 


1-line X 26-cnaracter liq- 
uid crystal display 


memory expanded to 22K 


1 


64K/cassette interface/disk 
interface 


81 keys, 5 multifunction, 
10-key keypad 


1 parallel, 1 serial 


RGB/composite video out- 
puts 640 X 400 res./80 x 
25 text 


basic system 

1 




SOtC'cassette recorder 


87 keys, 10 program- 
mable, numeric keypad 


1 serial, 1 parallel 


80 X 24 text mode ca- 
pability/16 colors 


serial and parallel ports. 80- 

column display card, expan- 
sion interfac 




32K/caBsette recorder 


64 keys, 12-key keypad 


1 parallel, 1 serial 


12- inch monochrome/64 
(32) X 16 text mode 


memory expands by 16 K, se- 
rial port added 




48K.cassette recorder 


64 keys, 12-key keypad 


1 parallel, 1 serial 


1 2-inch monochrome/64 
(32) X 16 text mode 


memory expanded to 48K 


p 


64Mloppy disk drive 


standard typewriter/16 
special tunctior> 


1 printer, 2 controller, ex- 
pansion connector 


■ built-in video output sup- 
ports 256 colors, 40 X 24 
text 


floppy disk drive 




64K/cassette interface 


83 keys, 10 function, nu- 
meric keypad 


1 serial 


12-inch monocnrome CM 


assembled Explorer 88 -PC 
with keyboard, color board. 
ROM and monitor 



24K 



65 calculator keys in 
typewriter arrangement, 
redefinabie 



input/output adapter/ex- 
pansion bus 



1-ltne X 26-character liq- 
uld crystal display 



memory expanded lo 24 K 



O 

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m 



113 





^^^ Manufacturer Model 


Price 


CPU 


Word Length 


Operating System 


Languages '^=-'*<"' 


■ NEC Home Electronics 


PC-BOOO 


" S1350 


Z80A-compatiDie 


8-bit 


Proprietary 


BASIC 


^^B^Kormuia Internationa) 


Pinecom (kitj 


$T354 ■■ 


S502 


S-bit 


N/A 


Not announced 


I IBM 


ISM-PC 


$1355 


8088 


16-bit 


HiA 


COBOL, FORTRAN, 
BASIC, Macro .^ 
Assemblef. Pascal .fl 


■ Muititecn tiectronics 


MIC-500 


"TT39'5 


2S0A 


"g-Bit 


CPU 


BASIC. COBOL, 
Pascal 


H Apple Computer 


Apple ile 


SI 395 


S502A 


B-bit 


N/A 


BASIC 


^^^ Heath Company 


HS-89-3 (kit) 


$1399 


Z80 


8-bit 


hDOSCpm 
optional 


BASIC 


H" Commodore Business 
Machines 


Commodore 64 


$1417.95 


6510 


8-bit 


Proprietary 


BASIC 


Heath Company 


HS-89-2 (kit) 


$1429 


Z80 


8-bit 


HDOS.'CP.'M 
optional 


BASIC 


Commodore Business 
Machines 


Commodore 64 
Executive 


$1443.95 


6500 series 


8-bi1 


Proprietary 


BASIC 


Hewlett-Packard 


HP75C 


$1445 


Not announced 




N/A 


BASIC 


NEC Home Electronics 


PC-8800 


$1448 


Z80A-compatible 


8-bit 


N^A 


BASIC 


Sony 


SMC-70 


S1475 


Z80A 


8-bit 


N/A 


BASIC, CB-80, 
Pilot Plus 


Franklin Computer Corp. 


Ace 1000 


$1494 


6502 


8-bit 


Apple DOS 3.3 
compatible 


BASIC 


^^■i Commodore Business 
^^B^ Machines 


CBIVI 8032 


$1495 


6502 


8-bit 


N/A 


BASIC 


h~^ 


Teletote 


$1499 


Z80A 


8-bit 


CP/M 


Not announed 



ceo 

z 
o 






Q 
o 



ft^ 



the Apple lie that made its appearance earlier this year. Still 
using a. 6502 microprocessor, the 8-bit Apple He has had its user 
memory upgraded to 64K. Further, it has also changed its 
keyboard slightly, providing 63 keys and two programmable 
keys. 

As with other .small-computer systems, this one uses BASIC 
as its primary user programming language and it features either 
low- or high-resolution graphics capability, along with a stan- 
dard 40-charactcr by 24-line text mode. The 40-character lines 
are fine for standard home applications, but it is limited for some 
applications such as word processing. If one wants to have 
word-proces.sing capability, then the Apple-offered 80-column 
display card must be used. For output, a user can interface with a 
standard monitor or with a home television if he buys an RF 
modulator. (But not for 80 columns.) 

Heath 

For those would-be computer users who would like more than 
just an outside look at a microcomputer, there's the Heath line of 
computer kits, the //59-series. These computers give you an 
inside-oui look at what makes a microcomputer tick as you put 
them together piece-by-piece. 

Since this series, the HS9-2. H89-J. comes with a single, 
buiit-in 5 '/4-inch minifloppy double-sided, double-density disk, 
the user has fast mass storage and retrieval capabilities right 
from the start. 

Programmable in BASIC and Z80 based, this series features 
an 84-key keyboard and a separate 12-key keypad. The sloped 
keyboard allows for quick data entry. Input/output is provided 
by three serial ports. These allow the //-S9-scries to interface 
with a variety of printers or modems. 

It should be noted that this CP/M-compatible system is al!-in- 
one. It combines the CRT, system board, and keyboard into one 
box and looks much like the traditional type of computer work- 
station with which many of us are familiar. 



TeleVideo 

TeleVjdeo is another of the long-established firms in the 
computer industry and it has an entry in the transportable com- 
puter market, the Teletote. (Remember, the transportable mar- 
ket was last year' s portable market . but the new generation of lap 
computers iias changed this designation.) 

The Teletote breaks no new ground in the computer industry, 
having been based around proven technology. It is driven by an 
8-bit Z80A microprocesiior and uses the industry-standard CP/ 
M operating system. 

It features 64K of RAM and one 368K double-sided, double- 
density 5'/i-inch minifloppy disk drive for storage. This com- 
bination gives the user a great deal of flexibility and increases 
the system's capabilities. Its prime drawback is that the user 
must use the same drive for both the application program disk 
and a data disk, which can make it somewhat cumbersome, 
especially if a file has to be copied. In this situation, the user 
must keep switching disks, so it's a good idea to consider 
investing in a second disk. 

Data entry is facilitated with the 75-key typewriter-type key- 
board and output is aided by 2 standard serial-ports. It is also 
equipped with what seems to be becoming the standard-sized 
monitor in the transportable field, a 9-inch monochrome unit, 
capable of 80-characters by 24-!ines in text mode and high- 
resolution graphics of 640- by 240-dots. 

Sony 

Sony, long a leader in consumer electronics, also has a 
small-computer offering in this price segment, the modular 
SMC-70. This computer contains a keyboard and easily up- 
grades into a powerful system. However, at this price level it is 
very much a basic unit. 

Driven by an 8-bit Z80A microprocessor, the SMC-70 con- 
sists of a system box and keyboard. The keyboard includes 71 
keys, a keypad, and nine special-function keys, tt is a standard 







Memory/Storaps 


Keyboard 


I/O 


Display 


Comments I^^^H 




32K/1 floppy disk drive unit 


71 keys, 5 multifunction 


1 parallel, 1 serial, 2 
game controller, digi- 
tized toucti panel 


256 X 192 capability, 32 
X 16 text, composite video 
output avail- 


iloppy disk drive ^H 




48K 


66 keys, 14-key keypad 


1 parallel 


9-inch monochrome 
CRT/280 X 192 graph- 
ios/80 column capability 


color mb fi i 1 r ^^^H 


t 


mK 


59 keys, 10 special func- 
tion, 20- key keypad 


N/A 


NM 


basic system, includes moth- ^^^| 
er board, cpu, 64K memory, ^^^B 
system housing and key- ■ 
board only ^ 




MKi^ 5 y." (loppy disk 
drives 


N/A 


2 serial, 1 parallel 


IM/A 


basic system, terminal re- ^M 
quired ^| 




64K/cassette interface 


ea-key typewriter, 2 
programmable 


game controller 


low/htgfi-res. color, 40 x 
24 test nnode, video output 


basic system ^| 




4SK/1 5 V4" floppy disk 
drive 


84 keys, 12-key keypad 


3 serial, 1 parallel 


white monoctirome dis- 
play'80 X 25 text mode 


■ 




64Kn 170K 5 %" floppy 
disk drive 


60 keys, 4 program- 
mable 


1 serial 


14-tncfi high-res. dedicated 
color monitor 


Iloppy disk drive ^M 




48K.1 5 yv floppy disk 
drive 


84 keys, 12- key keypad 


3 serial, 1 parallel 


green monochrome dis- 
pi ay/80 X 25 text mode 


H 




64K/2 170K 5 '/*" floppy 
disk drives 


standard 


1 IEEE-488 serial. 1 
standard serial 


6-tnch higfi-res. color dis- 
play 


2nd drive, standard serial B 
port H 




24Kcassette recorder 


61 keys, multifunctional 


interface port for add-on 
options 


32 character one-line LCD 


cassette recorder ^M 




64K/cassette interface/disk 
interface 


81 keys, 5 multifunction, 
10-key keypad 


1 parallel, 1 serial 


14-fncti monochrome 
CRVfSO X 25 text 


monochrome display j^ 




64fC'cassette interface 


72 keys, keypad. 9 
special function 


1 parallel 




basic system ^M 




64K/1 5 y*" floppy disk 
drive 


71 keys, 12- key keypad 


game controller 


40 X. 24,-280 X 192 graph- 
ic capability 


floppy disk drive ^M 




32K'cassette interface 


standard, numeric key- 
keypad 


1 serial 


integral display 


basic system S 


i 


64K'1 368K DS/DD 5 V." 
floppy drive 


75 keys, 16 specisd func- 
tion, 17-key keypad 


2 serial 


9-inch CftT/640 X 240 
graphics/BO x 24 text 


basic system, transportable ^^^^ 



typewriter-style unit that should facilitate keyboarding data or 
BASIC programming, the language thatcornes with the system. 
At this stage, the SMC~70 relies on a cassette interface and 
cassette recorder for data storage. 

Commodore 

A multi-line computer manufacturer. Commodore Business 
Machines has entries in many price classes and this price cate- 
gory is no exception. It is here that the BX256-80 makes its 
appearance, as does the 8032. 

The BX256'80 is a dual-processor machine, capable of han- 
dling both 8-bit and 1 6-bit programming. It was unveiled about a 
year ago. 

Driven by dual 6509 and 8088 processors, the BX2S6-80 is 
capable of sophisticated tasks. Its 256K of standard user mem- 
ory assures that more than enough memory is available for 
almost anything a user may want to do. In fact, with some of the 
new generation of memory-hungry programs, 256K is needed. 

It features a standard keyboard and is programmable in BAS- 
IC. It has a 12-inch monochrome CRT to display the machine's 
SO-characters by 25-lines. 

The second system to debut in this category is the 8032. This 
long-time veteran of the computer wars is driven by an 8-bit 
6502 microprocessor and it comes with 32K of RAM as stan- 
dard. Mass storage at this price level is handled via cassette 
recorder. 

Data entry is facilitated by a standard keyboard and separate 
numeric keypad. It is programmable in BASIC, With a standard 
monochrome display, diis basic system should easily meet most 
beginning home needs for most users. The user should also be 
able to access any information network by attaching a modem to 
the standard serial port. 

While these we the new systems in this price category, there 
are also two other systems that have been upgraded, the VIC-20 
and the Commodore 64. The VSC-IO upgrades and becomes a 



fairiy sophisticated system. With 29K of RAM, the system is 
becoming fairly flexibiie. However, it becomes even more 
flexible with the addition of a 170K 5 '/4-inch minifloppy disk for 
storage. This provides the user with a large increase in speed for 
both data access and retrieval. A color CRT is also added and a 
serial port gives this unit communications ability. 

The Commodore 64 upgrades twice. First, a color CRT and 
serial port are added. These two additions give the user the 
potential for color-graphics work and communications. Of 
course, if a user wants to take advantage of the communications 
potential he must add a modem. 

The second expansion gives the user access to a 170K floppy 
disk, with its speed and storage flexibility advantages. With this 
system limited to one disk, though, it is a bit cumbersome. 
However, help is on the way when this system gains its second 
disk in another price category. 

The Executive 64, on the other hand, becomes powerful with 
the addition of a second drive. 

Atari 

The new Atari systems appearing in this price category are the* 
MOOXL and 1450XLD. Although exact prices hadn't been es- 
tablished at press time, they are likely to be in the $1000 range. 

The J400XL is driven by an 8 -bit 6502C microprocessor and it 
comes with 64K of RAM. It has an integral software cartridge 
slot which allows it to use Atari's proprietary packaged soft- 
ware. 

Programmable in BASIC, it features a standard typewriter 
keyboard that has four special- function keys, four programm- 
able keys and 12 preprogrammed function keys. 

Input/output is provided by standard serial port. However, a 
user doesn't have to tie up this port by connecting it to a modem 
because it includes a built-in modem, which is a plus. 

Capable of supporting up to 256 colors, the display is limited 
to 40-characters by 24-lines of text, which is somewhat limiting 



o 
m 

3) 
115 



for serious word-processing work. 

The 1450XLD is nearly identical to the MOOXL with one 
major exception, it includes disk storage. The -XLD includes a 
slim line 5 W-inch minifloppy disk as standard and this gives the 
user access to 254K of mass storage. 

Another Atari system, the I200XL, has its capabilities up- 
graded in this segment with the addition of a disk drive. 

NEC 

Not only does the NEC PC-6000 ugrade in this price cate- 
gory, but the manufacturer also has another mode! that makes its 
debut here, the PC -8800, a more powerful version of last year's 
FC-500 /-series. 

What makes the new system different? At one point in its 
expansion, the PC-8800 gains an 8086 co-processor, giving this 
unit 8-bit and 16-bit capability. 

But, we're getting ahead of ourselves because at this level, the 
PC-8800 is roughly equivalent to last year's PC-8001. It is 
driven by a Z80A-compaiibie 8-bit microprocessor and it in- 
cludes 64K of user memory. However, at this level the user is 
limited to cassette storage that is far slower than disk storage and 
far less versatile. In its favor, though, is the fact that this model 
includes a disk interface, which gives the user the option of 
equipping this system with a disk drive, if he so desires. 

The 81 -key typewriter- like keyboard has five multifunction 
keys and a separate 10-key keypad. Input/output is aided by 
standard serial and parallel ports that enable you to tie a printer 
or modem to the unit, further increasing the unit's versatility. 

This computer features RGB color or composite- video out- 
put. It is capable of 640- by 400-dot resolution in the graphics 
mode or 80 characters by 25 lines in the text mode. 

The PC-8800 also upgrades once in this price category with 
the addition of a monochrome display that provides far better 
resolution than using a home television set. 

The PC-6000 gains a minifloppy drive in this price range. 

Sord 

Sord, one of the newer names in the microcomputer business, 
has a new offering in this price category, the M23. Driven by a 
Z80A 8-bit microprocessor, the M23 comes with 128K of RAM, 
which is about twice the user memory offered on other systems 
in this price category. 

Programmable in BASIC, Pascal, or Fortran, this unit has a 
59-fcey typewriter-like keyboard with a 20-kQf numeric keypad 
and nine special-function keys. 

Multitech 

Although a relative newcomer to the microcomputer market- 
place, Multitech not only has lower-priced offerings, but is also 
offering a full-blown small -computer system, the MIC^SOO. 

Driven by a Z80A 8 -bit microprocessor, the MIC -500 is a 
full-featured system. It includes not only dual serial ports, but 
also a parallel printer port. 

Its standm'd 64K RAM will perform many tasks the system is 
called upon to perform, including sophisticated applications 
routines. It is equipped with two disk drives and runs under the 
industry-standard CP/M operating system. 

It must be noted, should the user opt for the MIC -500 system, 
that it is a micromainframe and a terminal will have to be added 
to handle input and output. 

Radio Shack 

Radio Shack has four systems that become more fully con- 
(Q figured in this price category. For instance, the full complement 
9 of memory is added to the lap Model 100 to bring the total 
§ memory to 32 K. 

oc The Model HI is upgraded three times in this price category, 
o The second and third expansions of the Model HI make it a far 
Qj more powerful system. In the first expansion, a cassette recorder 
(jy is added. In the second, the memory is increased to 32K, which 
5 means the system can perform far more serious microcomputing 
_ £ tasks, A serial port is also added that gives this small-computer 



system the potential of tying into a modem and linking to other 
sy.stems via the phone line. The third expansion brings this 
system up to its full memory complement of 48K. 

The Color Computer becomes a more sophisticated system 
here with the addition of one 156K SVi-inch drive. 

The PC-2 can now act as a terminal in the field with the 
addition of a communications interface. 

Hewlett-Packard 

Hewlett-Packard's handheld computer also becomes more 
powerful in this price segment. The lone upgrade to the H75C is 
the inclusion of a cassette recorder for data storage and retrieval. 

Panasonic 

The HHC series also upgrades in this pricing segment. For 
instance, the HI 400 has its memory expanded to 22K, This 
means that you can enter longer documents or handle more 
complex tasks with this handheld. At the same time, the HJ800 
undergoes two memory upgrades. 

Texas Instrumerrts 

Contrary to what one might have thought about the capabilit- 
ies of the TI-99I4A system, it is much more than a simple, 
low-cost home computer. 

In the first expansion, a serial port is added to this home_ 
computer. The second expansion adds a parallel port. 

Formula International 

The Pinecom kit becomes even more versatile in this price 
category with the addition of an 80-column card and two types of 
monitors. The 80-column card gives the user die ability to 
handle serious word-processing chores because the machine 
now has the ability of displaying a full page's worth of text. 

The user is also given the option of choosing the type of 
monitor which best smts his needs. If he is interested in data and 
word- processing then a monochrome display is the best choice. 
However, if he is interested in graphics and color game-playing 
capability, then he should opt for the color CRT. 

Netronics 

The Explorer/88-PC fi-om Netronics becomes nearly a full- 
blown system with the addition of a keyboard, color monitor 
board, ROM-based BASIC and system-monitor program, and a 
color CRT. 

Although this system is still limited to cassette storage, a user 
can take advantage of cassette-based programs for applications. 
It should be kept in mind, though, that a cassette system is 
nowhere near as fast as a floppy-disk drive system for storage. 

Spectravideo 

Both the SV-318 and SV-328 upgrade in this category, too. 
The SV-318 becomes a far more powerful system with the 
addition of parallel and serial ports for input/ output and with the 
addition of more user memory for handling programs with 
greater sophistication. An expansion interface is also added for 
future system upgrading. 

The SV-328 also becomes more powerful as it gains parallel 
and serial interface ports. An 80-column card has also been 
added so that this system can handle either word-processing or 
sophisticated data processing chores. An expansion interface 
has also been added to facilitate system upgrading. 

Toshiba 

The TlOO upgrades with the addition of a monochrome dis- 
play, giving the user the chance to handle sophisticated word- 
processing or data-processing applications. 

Casio 

The Casio FX-9000P becomes more versatile with the addi- 
tion of 4K of RAM. This means it can now handle more 
sophsticated routines, although this amount of memory is some- 
what limited for high-level tasks. R-E 



116 



TR 



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fy yyyyyyyyYyYy¥ ¥ ¥¥¥¥¥¥V ¥¥¥^ 



VARIABLE MICROWAVE DOWN CONVERTER 



THIS IS NOT A KIT!! 



QUANTITY DISCOUNT ^^ 

1 79.95 

10....^, 74.95 

25 69.95 

50 64.95 

100 59.95 




All down converters built 

with New HOT Transistor 

for more amplifier gain. 

GREATER DISTANCE 



NEW-Power supply built 

with push button simplicity 

ABC Switch built in 

if Coax cable not included 






PLEASE ADD 

SUFFICIENT 

POSTAGE 

1 Unit weighs 5 lbs. 



To order by Visa or Master Charge 
No C.O.D. orders 

Call 800-428-3500 

Information 317-291-7262 

6254 La Pas Trail 
Indianapolis, Indiana 46268 



ELECTROniC 
RRinBOUl i 



v ** * **^********-****^**^^ ** -***-^ ** ** - ^********** * * * *** * *^** - ***^ * **** * **- * -- 



SATfUITE TffUVfSfOM RCCffVER 



tClftOiiiv-l 



KITS 

^eealire-c iff** 



The Electronic Rainbow Receiver consists of a receiver 
with an external down-converter that mounts at the 
antenna, feeds the voltage to the LNA through the coax 
cable. The 4GHz signal is down converted to 70 ^4Hz 
and is fed through the R{ii59/U coax to the receiver. 



Rainbow Kits are supplied with simple step by step in- 
structions. All the circuits that you need expensive test 
equipment to do are pre wired and tested. All printed 
circuit boards have the outline of each part printed on 
them. 



RECEIVER FEATURES 

Built in RF modulator • Detent 
Tuning-3.7 to 4.2 GHz • Variable 
Audio-5.5 to 7.5 MHz • Invert Video 
• Channel Scan • Voltage monitor- 
ing • Meter output • Remote Tuning 
SPECIFICATIONS: 
Single Conversion Image Rejection 
Dow/n converter • Threshold 8 db 
CNR • IF Bandwidth 24MHz • Out- 
put IV Audio and Video • IF Fre- 
quency 70MH2 • Video Bandwidth 
4.5MHz • Size 3y2"Hx8'/2"Dxliy4"W 



Complete Satellite TV Receiver 

KIT »1 — Contains: 
• Mainboard • Tuning Board • Down- 
converter Board • Modulator Board 
' All parts needed to complete receiver 
' Down Converter built in case. 
Cabinet, attractive black brushed ano- 
dized metal with silk screened front 
and back for a professional look 
" 70 MH2 Filter is pre-wired and tested. 
' Complete instruction ^nnw AA 
Manual. #JT9.IIII 



euatanteed 
to plo-f^ 



We will accept telephone orders for Visa & Mastercard 
No C.O.D. Orders 

To Order Call 3^0-428-3500 317-291-7262 

Ctiniplele Kit Weighs 10 pounds. Please add SutllclenI Postage 

6254 La Pas Trail 

Indianapolis, Indiana 46268 



KIT »2 — Board Kit Contains: 

• Main Board • Tuning Board • Down- 
converter board • Modulator Board ' 

• Parts List, assembly and alignment 
manual 

• 4GH2 local oscillator and 70MHz filter 
is pre-wired and tested. d!1Q0 HH 



Instruction manual. Contains printed 
circuit board layouts, parts placement, 
and alignment instructions. d>Ar AA 



ELECTROniC 

Rflinnouj o 



o 
o 

H 

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□a 
m 

3 

CO 

u 



CIRCLE S9 ON FREE INFORMATION CARD 



117 



1 


^^P 


^^^^ COMPUTER MANUFACTURERS 


^^^H 


■ 


^^^^^^ 


The following is a list of the manufacturers whose systems ^f^^^^^^f 


■ 


^^^^^^^B 


were covered in this special section. Those readers who ^^^^^^^| 


■ 


^^^^^^^B 


wish to get more information about a system should contact ^^^^^| 


■ 


^^^^^ 


the manufacturer directly. 




^^H 


■ 


Access Matrix Corp. 


Digital Equipment Corp. 


IMS International 


Seequa Computer Corp. ^^^B 




21 59 Bering Drive 


2 Mount Royal Ave. 


2800 Lockheed Way 


209 West St. ,■ 




San Jose, CA 95131 


Box 1008 
Maynard, MA 01752 


Carson Ctty, NV 89701 


Annapolis, MD 21401 ^fl 




Albert Computers 




tntertec Data Systems 


Sharp Electronics ^^^| 




31 70 Los Feiiz Drive 


Docutel/OlivettI Corp, 


2300 Broad River Rd. 


10 Sharp Plaza ^^H 




Unite 


155 White Plains Rd. 


Columbia, SC 29210 


Paramus, NJ 07652 '^^H 




Thousand Oaks, CA 91362 


Tarrytown. NY 10591 


Ithaca In tersy stems 


Sony ^^H 

Sony Drive ^^^| 
Park Ridge, NJ 07656 ^^M 




Atspa Computer 


Dursrtgo Systens 


200 E, Buffalo, Box 91 




300 Harvey West Blvd 


3003 North Fifsl St. 


Ithaca, NY 14851 




Santa Cruz, CA 95060 


San Jose, CA 95134 










Kay pro Division 


^^^M 




Altos Computer Systems, 


Dynalogic Info-Tech Corp. 


PO Box N 


Sord Computer ^^^| 




2641 Orchard Park Way 


8 Colonnade Road 


Del Mar, CA 92014 


200 Pari< Ave ^^H 




San Jose, CA 95134 


Ottawa, CANADA, K2E 7M6 


LNW Research Corp. 


New York, NY 1 01 66 ^^H 




Apple Computer 


Eagle Computer, Inc. 


2620 Walnut 


S(>ectravideo ^^^| 




20525 Mariani Drive 


983 University Ave, 


Tustin. CA 92680 


39 W. 37th St. ^^H 




Cupertino, CA 95014 


Los Gatos, CA 95030 


Mattel Electronics 


New Yot^, NY 10018 '^^H 




Atari Products 


Epson America 


5150 Rosecrans Ave 


Sumicom Inc. ^^^| 




Box 50047 


3415KashiwaSl. 


Hawthorne, CA 90250 


17862 East 17 St. ^^H 




San Jose, OA 95150 


Torrance. CA 90505 


Morrow Designs 


Tustin, CA 92680 ^^H 




Athena Computer 


Formula International 


600 McCormick St. 


Teie Video Systems ^^^| 




31952 Camino Capistrano 


12603 Crenshaw Blvd. 


San Leandro, CA 94577 


1 1 70 Morse Ave ^^H 




San Juan Capistrano, i 


CA Hawthorne, CA 90250 




Sunnyvale, CA 94086 ^^^| 




92675 


Franklin Computer Corp. 


Multitech Electronics 

195 West El Camino Real 


^H 




Basis, Inc. 


2138 Route 38 


Sunnyvale, CA 94086 


Texas Instruments ^^^H 
Box 53 ^^H 
Lubbock, TX 79408 '^^H 




6435 Scotls Valley Drive 


Cherry Hill, NJ 08002 






Scotts Valley, CA 95066 




NEC Home Electronics 






Fujitsu Microelectronics 


1 401 Estes Ave. 


^^^1 




Canon USA 


3320 Scott Blvd. 


Elk Grove Village, IL 60007 


Timex Computer ^^^| 




One Canon Plaza 


Santa Clara, CA 95051 




Box 1700 ^^M 




Lake Success, NY 11042 


Gavllan Computer Corp, 


NEC Information Syat. 
5 Militia Drive 


Waterbury, CT 06721 ^^H 




Casio, Inc. 


240 Hacienda Ave. 


Lexington, MA 02173 


Tostilba America ^^^| 




15 Gardner Rd. 


Campbell. CA 95008 




2441 Michelle Dr. M 




Fattfielcf, NJ 07006 


Gifford Systems 


Netronlcs Research 


Tustin, CA 92680 ^^^M 




Coleco Industries 


1922 Republic Ave. 


333 Litchfield Rd. 


Unitronics ;^^^| 




946 Asylum Ave, 


San Leandro, CA 94577 


New Milford, CT 06776 


401 Grand Ave. j^^^^ 




Hartford, CT 06105 


Heath Company 


H ^1 IL f^i. .^V ^ 


Suite 350 ^^H 
Oakland, CA 9461 ^^H 


- 


Columbia Data Products 


Benton Harbor. Ml 49022 


North Star Computers 






8990 Route 106 

Columbia, MD 21045 „ , „ „ , ^ 

Hewlett-Packard 

Commodore Business Mach, !P™ ^.^ ^[el?!^- 
1200 Wilson Drive ^f^*"'^' °^ ^^^^O 


14440 Catalina St. 
San Leandro, CA94b// 

Osborne Computer Corp. 
26538 Danti Conn 


Vector Graphic, Inc. V^| 

500 North Ventu Parit Rd. ^^B 
Thousand Oaks, CA 91320- ■ 
2798 M 




West Chester, PA 19380 




Hayward, CA 94545 


Video Technology ^^H 




Compaq Computer Corp. 

20333 FM 149 


Hitachi Sales Corp. 
West Artesia 


Panasonic Co. 


2633 Greenleaf Ave. ^^^| 
Elk Grove, IL 60007 ^^H 




Houston. TX 77070 


Compton, CA 90220 


One Panasonic Way 
Secaucus, NJ 07094 


Wang Laboratories ^^^H 




Com pu Pro 

Box 2355 

Oakland Airport, CA 9461 4 


Honeywell, Inc. 

200 Smith St. 
' Waltham, MA 02154 


Radio Shack 
One Tandy Center 
Fort Worth, TX 76102 


One Industrial Ave. ^^^1 
Lowell, MA 01 B51 ^^H 


z 
o 


Computer Devices, Inc. 






Xerox Corp. ^^B 




25 North Ave. 


IBC 


Sage Computer Tech. 


1341 West Mockingbird Lane W 


o 


Burlington, MA 01803 


21592 Marilla St. 


35 North Edison Way, Suite 4 


Dallas, TX 75247 ^^fl 


u. 




Chatsworth.CA 91311 


Reno, NV 89602 


^^^H 


6 


Cromemco, Inc. 






"^^^B 


280 Bernado Ave. 


ISM 


Sanyo 


Zenith Data Systems 9 


118 


Box 7400 


Box 1328 


51 Joseph Si. 


1 000 North Milwaukee Ave 9 


Mountain View, CA 94039 


Boca Raton, FL 33432 


Moonachie. NJ 07074 


Glenview, IL 60025 ■ 




Disk drives are almost standard 

equipment as we move into tfiis 

range. And most machines here 

have at least 64K RAI^. 



^1500 to ^SOOO 



MARC STERN 



i 



XF THERE HAS BEEN ONE TRUTH ABOLT THE NtlCROCOMPUTEH 

industry during the last couple of years, it is this: every day it 
gets more crowded. In this year's hardware guide alone, there 
are more than 500 entries as various machines go through their 
paces and upgrade. 

Some estimates have put the number of small -computer sys- 
tems available at more than 250, while others have put the 
number at more than 400. But, whatever the number, there's 
little doubt that it's confusing to the average buyer and our 
supplement is an attempt lo ease that confusion. 

As you look over the charts we offer, note how each system 
upgrades as the price climbs. And, if you pay careful attention, 
you should have a good idea of how much computing power you 
can buy and still be within your budget. 

Don't let the absolute numbers confuse you becau.se, in the 
final analysis, only you can judge which computer sy.stem is 
right for you. [f we have hejped you in that search, then we have 
succeeded in the purpose of this section. 

in this price category nine new names join the list of man- 
ufacturers of fering systems. But, these aren't all the new entries 
you will find. Other manufacturers that have already been men- 
tioned also have new offerings to look at. Finally, existing 
systems continue to grow more and more powerful. 

One of the more interesting things to note, as you examine the 
charts, is that in this category more and more systems are 
starting to come through with either one or two minifloppy disk 
drives for storage. Of course, including a drive does raise the 
system's price, but it also makes it much more flexible and 
provides speedier data retrieval and storage. 

So, without further ado, let's look at the new additions to the 
price parade and see what each system has to offer. 

Morrow Design 

George Morrow is a longtime veteran of the microcomputer 
industry and you would expect his company to have an entry in 
the microcomputer field. Indeed he does. In fact, he has two — 



the Micro Decision MDl and MD2. Both have their starting 
prices in this category. 

The Micro Decision is a Z8D-based, 8-bit system that runs 
under the CP/M operating system. Its 64K of user memory 
provides more than enough memory space for many sophisti- 
cated routines. This operating system is a natural for the average 
user because it allows access to a wide variety of already* 
packaged, proven programs. 

Programmable in BASIC, ih.zMDi includes one 200K single- 
sided, double-density disk drive as standard. The typewriter- 
like keyboard allows quick data or word- processing entry and 
enhances this machine. 

Input^output is provided through two serial ports that Morrow ' 
includes with this system. This gives the user the option of 
attaching both a dedicated printer and a modem. The modem, 
incidentally, gives the user access to the world of database 
networks, bulletin boards, or other computer systems and gives 
him the ability to upload or download files. 

The MDi includes basic applications software in its base price 
and gives the user a monochrome display for output. 

The MDl is an upgraded MDl . It adds a second single-sided, 
double-density disk drive. This is perhaps the most important 
improvement thai can be made to any system, because adding a 
second drive .so greatly improves the fiexibility and productivity 
of any sy,stem. Using one disk limits the user to loading not only 
the program disk in the single drive, but also removing the 
program disk and loading the data. It involves an incredible 
amount of disk-swapping that having a second drive eliminates. 
Further, only having only one disk drive makes copying a 
program or data file cumbersome. 

Kaypro 

Although Kaypro (Non-Linear Systems) has been in the 
transportable computer business only a little more than a year, it 
has already made quite a market for itself. This llrm has a long 
hi.slory of producing fine electronics test equipmem and so its 



Ol 

o 

CD 

m 






la; 




^^1 


B 






^^1 


^B 


B 


TABLE 1— S2000-S2500 
"Manufacturer 


Model 


Price 


CPU 


Word Lenqth 


Operatinq System 


Languages 


i 


NEC Home Electronics 


PC-6000 


$1500 


Z80A-compatible 


8-bit 


Proprietaryr 


BASIC 




E Panasonic Co. 


HUOO 


$1537 


6502 


8-bit 


SNAP 


BASIC 


4 


Radio Shack 


TRS-80 Color 
Computer 


S1547 


6809E 


B-bit 


Proprietary 


BASIC 




Commodore Business 
Machines 


VIC-20 


$1551.80 


6502 


8-bit 


Proprietary 


BASIC 




Spectravideo 


5V-318 


S1554 


Z80A 


a-bit 


CP/M 


BASIC 


^^^^H 


Toshiba America 


T100 


$1590 


Z80A 


8-bit 


NA 


BASIC 




Morrow Design 


Micro Decision 
(MD1) 


S1590 


Z80A 


8-bit 


CP/M 


BASIC 




Kaypro Corporation 


Kaypro II 


$1595 


Z80 


8-bit 


CP/M 


BASIC, Pascal, Fortran, 
Assembly, COBOL 


Franltiin Computer Corp, 


Ace Professional 


$1595 


6502 


8-bit 


Apple DOS 3.3 
compatible 


BASIC 


1 


Albert Computers 


Albert 


$1595 


Not announced 


Not announced 


Apple DOS 3.3 
compatible 


Not announced 




Eagle Computer Inc. 


Eagle IIE-1 


$1595 


Z80A 


8-blt 


CP/M 


BASIC 




Panasonic Co. 

r 


H1800 


$1637 


6502 


8-bit 


SNAP 


BASIC 


^ 


Casio, Inc. "^gf^ft 


FX-9000P 


$1637 


Z80A-compatibte 


6-bit 


Not announced 


BASiC 




Hewlett-Packard 


HP75C 


$1640 


Not announced 




N/A 


BASIC 




Radio Shack 


TRS-80 Mo6el 4 


$1699 


Z80A 


8-bit 


TRSDOS. 
LDOS, CP/M 


BASIC 


1 


Atari Products 


1200XL 


$1718 


6502 


8-bit 


Atari DOS III 


BASiC 




NEC Home Electronics 


PC-6000 


$1749 


Z80A-compatible 


8-bit 


Proprietary 


BASIC 


1 


Apple Computer 


Apple Me 


$1769 


6502A 


8-bit 


N/A 


BASIC 




Netronlcs Research 


Explorer/85 


$1784.75 


8085 


8-bit 


CP/M 


machine/BASIC 




y Texas Instruments 


TI-99/4A 


$1785 


TMS9900 


16-bit 


Proprietary 


BASIC 


■ 


Cromemco Inc. 


C-10 


$1785 


Z80A 


8-bit 


CP/M 


BASIC, RATFOR, COBOL, 
Fortran, LISP, assembler 


■Panasonic Co. 


H1400 


$1791 


6502 


8-bit 


SNAP 


BASIC 




Franklin Computer Corp. 


Ace 1000 


$1794 


6502 


8-bit 


Apple DOS 3.3 
compatible 


BASIC 




Sumicom Inc. 


System 330 


$1795 


8088 


16-bit 


N/A 


Fortran, COBOL, Pas- 
cal. BASIC 


Hewlett-Packard 


HP86A 


$1795 


Not announced 




N/A 


BASIC, Pascal. 


Fortran 


Osborne Computer Corp. 


Osborne 1 


$1795 


Z60A 


8-bit 


CP.-M 


BASIC 




Commodore Business 
Machines 


Commodore 64 


$1816.95 


6510 


8-bit 


Proprietary 


BASiC 




Radio Stiack 


TRS-80 Mode! Ill 


$1849 


Z80A 


8-bit 


TRSDOS 


BASiC, COBOL 
Assembler 


., Fortran, 


Sony 


SMG-70 


$1850 


Z80A 


8-bit 


N/A 


BASIC, CB-80, 


Pilot Plus 


J 


^_^ 


■ 






^_^ 


^^^ 


^ 



1 


Memorv'Sloraqe 


Keyboard 


I/O 


Display 


Comments i^^^H 


h 


32K/'1 (loppy disk drive unit 


71 keys, 5 muitifu notion 


1 parallel, 1 serial, 2 
garne controller, digi- 
tized touch panel 


monochrome CRT added, 
32 X 16 


;'!onochrome (green) CRT ^M 


I 


22K 


65 calculator keys in 
typewriter arrangement, 
redefinable 


input/output adapter/ex- 
pansion bus 


1-line X 26 -character liq- 
uid crystal display/color TV 
adapter 


color television adapter L^^^l 




32K/2 156K 5 '/V floppy 
drives 


53 keys 


1 serial 


32 X 16 color text 
mode/256 x 192 graphics 
capability 


second drive added ^H 




29K.'2170K 5 y*" floppy 
riisk drives 


66 keys, 4 user- 
procirammable 


1 serial 


14-inch high-res. dedicated 
color monitor 


2nd drive added ^H 


1 


64K/1 2S6K 5 Vi' floppy 
disk drive 


71 keys, 10 program- 
mable, bultt-in joystick 


1 serial, 1 parallel 


256 X 192 resolution, 16 
colors, television used as 
display 


1256K drive ^J 




64K/cassette, 16KRAr^ 
pack 


89 keys, 8 special func- 
tion 


1 serial, 1 parallel 


8-line by 40-char. liquid 
crystal display 


liquid crystal display, ibK ^| 




64K/1 160K 5 y*" floppy 
(Jrjve 


standard 


1 serial, 1 parallel 


monochrome CRT 


basic system ^^^^H 




64K/2190KSS/DD5y4" 
drives 


72 keys, 14-key keypad, 
20 programmable 


1 serial, 1 parallel 


9-inch monochrome moni- 
tor/80 X 25 text 


portable system ^M 


t 


64K/1 5 w" (loppy disk 
drive 


72 keys, 12-key keypad 


game controller 


80 K 24/280 X 192 graph- 
ic capability 


system includes one drive ^M 
monochrome monitor, 80-col- ^M 
umn card, and bundled ^M 
software _^^^H 




64K.'2 5 '/4" floppy drives 


59 keys, 5 special func- 
tion 


1 serial, 1 parallel, 
RS-42Z'423 capability 


RGB outputs, 256 
colors, 40 or 80- 
column text mode 


basic system ^^^^H 




64K/1 390K 5 y*" floppy 
drive 


75 keys ^»^^^h 


I 2 serial, 2 parallel 


optional 


basic system ^^^H 


h 


24K 


65 calculator keys in 
typewriter arrangement, 
redefinable 


input/output adapter/ex- 
pansion bus 


Mine X 26-character liq- 
uid crystal display/color TV 
adapter 


color television adapter j^^^H 




24Kycassette interface 


67 keys. 16-key keypad 




5.5-inch monochrome, 32 
X 16 text, 256 x 128 
graphics 


15K RAM added ^^H 




24K/cassette recorder 


51 keys, multifunction 


interface port for add-on 
options 




memory incrgd^gd 1C> :^4K ^^^| 


1 


64K/1 184K 5 ¥<," floppy 
drive 


70 keys, 3 program- 
mable keys. 12-key 
keypad 


1 parallel 


12-Inch monochrome/80 x 
24 text (64 X 16 double- 
sized) 


disk drwe added ^^^M 




64K 


standard typewriter/16 
special function 


1 printer, 2 controller, ex- 
pansion connector 


built-in video output sup- 
ports 256 colors, 40 x 24 
text 


2nd iioppy disK drive added ^^^^H 


1 


32K/1 floppy disk drive unit 


71 keys, 5 multifunction 


1 parallel, 1 serial, 2 
game controller, digi- 
tized touch panel 


composite color CRT add- 
ed, 32 X 16. up to 256 x 
192 graphics 


color Cf^r ^^H 




64K/cassette interface 


63-key typewriter, 2 
programmable 


game controller 


12-inch monochrome 
CRT/80-column card/80 x 
24 text mode 


CHI and tJU-coiumn card '^^^^^ 




64Kn 8' floppy disk drive 


56 keys 


N/A 


12-inch monochrome CRT 


disk dnve. conlxoller, operat- ^^^^^B 
ing system ^H 


k 


48K/1 floppy disk drive 


standard 


1 serial, 1 parallel HEX- 
BUS expansion unit, pe- 
ripheral interface 


16 colors 


disk drive, plus conlrolier ^M 




64K'1 390K 5 W" floppy 
disk drive 


57 keys 


1 serial, 1 parallel 


12-inch monochrome/80 x 
25 text/high-resolution 
graphics 


modular system with ofie ^M 
drive ^^^H 


■ 


22K 


65 calculator keys in 
typewriter arrangement, 
redefinable 


input/output adapter/ex- 
pansion bus/1 serial 


Mine x 26-character liq- 
uid crystal display/color TV 
adapter 


serial port ^^^H 




64W1 5 W' floppy disk 


72 keys, 12-key keypad 


game controller 


40 x 24/280 X 192 graph- 
ic capabiltty 


integral disk housing arid disi^^^^H 




128K 


95 keys, 8 special func- 
tion, 10-kev keypad 


1 parallel 




basic system ^H 




64K 


59 keys, 20-key keypad, 
14 special function 


1 parallel 




basic system ^H 




64K-'2 102K 5 Vi" floppy 
drives 


57 keys, 12-key keypad 


1 serial, 1 lEeE-488, 
modem, external video 
connector 


5 W monochrome CRT/52 
X 24 text mode 


transportable I^B 




64K/2 170K 5 y*" floppy 
disk drives 


60 keys, 4 program- 
mable 


1 serial 


14-tnch high-res. dedicated 
color monitor 


2no' drive aaaea o^^ 




48K'1 184K 5 Vi" floppy 
drive 


64 keys, 12 -key keypad 


1 parallel 


12-inch monochrome/64 
32) X 16 text mode 


184K drive adaea g 




64K/cassette 


72 keys, keypad, 9 
soeciat function 


1 parallel, 1 serial 


home television 


basic system ^ 


1 






^^^^ 


- 





TABLE 1— $2000-52500 (continued) 



Manufacturer 


Model 


Price 


CPU 


Word Length 


Operating System 


Languages ^B^H 


Atari Products 


600XL 


$1869 


6502C 


S-bit 


Atari DOS III 


BASIC 


.Spectra video 


SV-328 


$1874 


Z80A 


8-bit 


CPM 


BaSiC 


Panasonic Co. 


H1800 


$1891 


6502 


8-bit 


SNAP 


BASIC 


, Toshiba America 


TiOO 


$1895 


Z80A 


6-bit 


NA 


BASIC 


'leleVideo Systems 


Teletote 


$1899 


Z80A 


8-bit 


CP/M 


Not announced 


Netronics Research 


Explorer/88-PC 


$1899,95 


8083 


16-bit 


MS-DOS 


fnachine/BASIC 


Heath Company 


HS-89-3 (kit) 


$1924 


Z80 


6-bit 


HDOS/CP/M 
optional 


BASIC 


1 Appie Computer 


Apple lie 


$1934 


6502A 


8-bit 


N/A 


BASIC ^ 


Hewlett-Packard 


HP75C 


SI 935 


Not announced 




N/A 


BASIC 


Radio Shack 


TRS-SOModeiiil 


$1948 


2S0A 


8-bit 


TRSDOS 


BASIC, COBOL, Fortran, 


Spectravideo 


SV-318 


$1953 


Z80A 


8-bit 


CP;M 


BASIC 


L Heath Company 


HS-89-2 (kit) 


$1954 


Z80 


8-bit 


HDOS.CPM 
optional 


BASIC 


Docutei/Oilvetti Corp. 


M20 


$1988 


Z8001 


16-bit 


N/A 


BASIC 


E Morrow Design 


Micro Decision 
(MD2) 


SI 990 


Z80A 


8-bit 


CPM 


BASIC 


■ Commodore Business 
Machines 


SuperPET 


$1995 


6502^6809 


8-bit 


N/A 


BASIC. APL, COBOL. For- 
tran, Pascal 


1, Osborne Computer Corp, 


Osborne 1 


$1995 


ZBOA 


8-bit 


CP/M 


BASIC 


Seequa Computer Corp. 


Chameleon 


$1995 


Z80A,'8088 


8/16-^1 


MS-DOS, CP/ 
M, CP/M-86 


BASIC, Fortran. Pascal, 
COBOL, FORTH. LISP, as- 
semb.. C, PL'1 


I Franklin Computer Corp. 


Ace 1200 


$1995 


6502.'Z80 


8-bit 


Apple-compati- 
ble/CP.'M 


BASIC 


Toshiba America 


TIOO 


"^i§95 ■ 


Z80A 


8-bit 


CP/M 


BASIC 


. LNW Research Corp. 


LNW80 Model 2 


$1995 


280A 


8-bit 


N/A 


BASIC 


Kaypro Division 


Kaypro IV 


$1995 


Z80 


8-bit 


CPM 


BASIC, Pascal, Fortran, As- 
semb,. COBOL 


1 Eagle Computer Inc. 


Eagle IIE-2 


$1995 


Z80A 


8-bit 


CP/M 


BASIC 


Sanyo 


MBC1000 


$1995 


Z80A 


8-bit 


CP/M 


j/^M 


[ Eagle Computer Inc. 


Eagle PC-E 


$1995 


8088 


16-bit 


CPM-86 




NEC Home Electronics 


PC-8800 


$1996 


Z80A-compati- 
ble.'8086 


- a/1 6-bit 


WA 


BASIC 


Radio Shack 


TRS-80 Model 4 


$1999 


Z80A 


8-bit 


TRSDOS, 
LOGS. CP'M 


BASIC 





i 



o 

i 



LU 

6 

< 
IT 

122 



move into the microcomputer field is somewhat logical. 

Us offering in this field, the Kaypro //, easily shows its 
heritage. Packaged in a sturdy, ail-meta! box, the Kaypro I! 
Icxjks as if it would be more at home on a test bench than in a 
computer showroom. The box is heavy-gauge metal and the 
components look like they mean business. 

Like the ail -in -one transportable Osborne!, the Kaypro II is a 
fully configured system. It includes a Z80 8-bit microprocessor 
and a series of applications programs to complete this system. 
These applications include a spreadsheet, word-processing, and 
business BASIC programming language, plus the CP/M operat- 
ing system. Its 64K of user memory lets the user take advantage 
of those sophisticated packages. 



This system takes advantage of a disk operating system from 
the start as it includes two single-sided, double-density 190K 
5 '/4-inch minifloppy disk drives. 

The Kaypro I! features a standard, sloped typewriter-like 
keyboard with 72 keys, and a 1 4-key numeric pad plus pro- 
grammable keys. The keys make a telltale beeping sound as you 
input data. 

Input/output is handled by a standard serial and a standard 
parallel pon. Display output is handled by a 9-inch monochrome 
CRT. This is rapidly becoming the standard size in the transport- 
able field. 

There's also another Kaypro model in this field, the Kaypro 
IV, whose price puts it just at the top limit of this category. The 







Memory/Storaq e 


Keyboard 


I/O 


Display 


Comments l^^^^f 


i 


16K/2 floppy disk drives 


62 keys, fielp key, 4 
special function 


1 serial, 2 controller, ex- 
pansion connector/ 
interface module 


built-in video output sup- 
ports 256 colors, 40 x 24 
text 


2nd 1 loppy disk drive ^^^H 


1 


144K/1 256K 5 W' floppy 
drive 


87 keys, 10 program- 
mable, numeric 
keypad 


1 serial, 1 parallel 


80 X 24 text mode ca- 
pability/16 colors 


64K. disk drive ^^^H 


1 


24K 


65 calculator keys in 
typewriter arrangement, 
redefinable 


input/output adapter/ex- 
pansion bus/1 serial 


Mine X 26-cfiaracter liq- 
uid crystal display/color TV 
adacter 


serial port ^H 




64K/cassette, 32K RAM 
cartridges 


89 keys, 8 special funct. 


1 serial, 1 parallel 


8-line by 40-Ghar. liquid 

crystal display 


liquid crystal disptay. 32K ^H 
RAM cartridge ^M 




64K'2 368K DS/DD 5 Vl" 
floppy drives 


75 keys, 16 special func- 
tion, 17-key keypad 


2 serial 


9-incti CRT/640 x 240 
graptijcs/eo x 24 text 


2nd drive ^M 




64K/1 5 W" floppy disk 
drive 


83 keys, 10 function, nu- 
meric keypad 


1 serial 


12-inch monociirome CRT 


kit form of Explorer/88- PC ^| 
with drive and boards ^| 




48K/2 5 54" floppy disk 
drives 


84 keys, 12-key keypad 


3 serial, 1 parallel 


vKfiite monochrome dis- 
play/80 X 25 text mode 


2nd drive ^M 


b 


64K/cassette interface 


63-key typev^riter, 2 
programmable 


1 parallel, game control- 
ler 


12-inch monochrome 
CRT/80-column card/80 x 
24 text mode 


parallel port added ^^^H 




24K/cassette recorder 


61 keys, multifunction 


general purpose I/O port 


32 cfiaracter one-line LCD 


general purpose I/O port ^| 
added ,^^H 




48K/1 184K 5 '//'floppy 
drive 


64 keys, 12-key keypad 


1 parallel, 1 serial 


12-inch monochrome/64 
{32) X 16 text mode 


port ^^^^^1 




mKJ2 256K 5 W" floppy 
dtsi( drives 


71 keys, 10 program- 
mable, buitt-in joystick 


1 serial, 1 parallel 


256 X 192 resolution, 16 
colors, television used as 
display 


2nd drive ^H 




48K/2 5 Vi" floppy disk 
drives 


84 keys, 12 -key keypad 


3 serial, 1 parallel 


green monociirome dts- 
pi ay/80 X 25 text mode 


2nd drive ^^^^M 




128K^cassette interface 


72 keys, 16-key keypad 


1 serial, 1 parallel 


12-inch high-res. mono- 
chrome/80 X 25 text mode 


basic system ^^^| 




64K,'2 200K 5%" floppy 
drives 


standard 


1 senal 


monochrome CRT 


second SS'DD drive added ^^^^H 




96K; cassette interface 


standard, numeric 
keypad 


1 serial 


12-inch monochrome 
CRT/80 X 25 text mode 


basic system ^^^^ 


1 


64K/2 204K 5 V<" floppy 
drives 


57 keys, 12-key keypad 


1 serial, 1 lEEE-488, 
modem, external video 
connector 


5 W monochrome CRT/52 
X 24 text mode 


disks now D^/DO ^^^M 




128K/2 160K SS/DD 5 y4'' 
floppy drives 


83 keys, 10 function, 17- 
key keypad 


1 serial, 1 parallel 


9-inch monochrome/eo x 
24 text/640 x 200 graph- 
ics 


basic system 'i^^^H 




128IC'1 5 '/4" floppy disk 
drive 


72 keys, 12- key keypad 


1 serial, 1 parallel, game 
controller 


80 (40) X 24/280 x 192 
graphic capability 


basic system ^H 


i 


64K/2 280K DS/DD 5 'A" 
drives 


89 keys, 8 special func- 
tion 


1 parallel, 1 serial 


8 lines X 40 characters, 
LCD 


2 drives add>^ ^| 




96K/cassette interface 


73 keys, 11 -key keypad 


1 parallel, 1 serial 


480 X 192 color ca- 

pabilitv/62 X 16 text mode 


basic system ^M 


k 


64K/2 5 Vi" DS/DD drives 


72 keys, 14-key keypad, 
20 programmable 


1 serial, 1 parallel 


9-inch monochrome moni- 
tor, 80 X 25 character 


ubibU Uiiuey ^^^^H 




64K/2 3gOK 5 '/t" floppy 
drives 


75 keys 


2 serial, 2 parallel 


12- inch monochrome/80 x 
25 te>;t mode 


2nd drive added ^^^^B 




64K/1 328K DS/DD 5 V<" 
floppy drive 


55 keys. 5 program- 
mable, 10- key keypad 


1 parallel, 1 serial 


12- inch monochrome/ 80 
X 25 text mode 


basic system ^H 




64K,'1 320K 5%" drive 


105 keys 


2 serial, 1 parallel 


optional 


basic system ^| 




128K/cassette interface/ 
disk interface 


81 keys, 5 multifunction, 
10-key keypad 


1 parallel, 1 serial 


14-inch monochrome 
CRT/80 X 25 text 


8066 co-processor. 64K. ^H 
high-res CRT ^M 




64tC'2 184K 5 Vt" floppy 
disk drives 


70 keys, 3 program- 
mable, keypad 


1 parallel 


12-inch monochrome 


2nd drive added ^M 












fl 



Kaypro FV is essentially the same machine as tlie //, but with 
much greater memory. The amount of storage on the /V is 
upgraded to 8CX)K by changing to two double-sided, double- 
density 5'A-inch minifloppy drives. It, too, comes with all the 
basic software one could need for serious computing as soon as 
the box is opened. 

Osborne 

The Osborne I is the machine that launched the transportable/ 
portable computer market. When it was introduced in 1981 , it 
was a daring gamble. How, people asked, could the company 
include software, dual disk drives, and a monitor in a portable 
package and still remain in business? After all , it was reasoned at 



the time, the software cost as much as the system itself. But, 
Osborne did it and established a new .segment of the 
microcomputer market. 

What does this package include? For starters, there's 64K of 
user memory , enough to use the sophisticated software packages 
included with this system efficiently. Further, the system in- 
cludes two 102K single-sided S'A-inch floppy disk drives and a 
full keyboard with 57 keys and a separate numeric keypad . 

Perhaps its prime drawback is the size of its screen. At 5.5 
inches, it is one of the smallest video displays on the market. 
Although it is a high-resolution affair, the display is limited to 52 
characters by 24 lines; and, the size of the display makes the 
letters somewhat hard to see at times. However, a user should 



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soon become acclimated to this display and it should be easy to 
use. 

It runs under the industry-standard CP/M operating system, 
so a user can have access to the wide range ol' packaged software 
available, [nierestingly, this unit includes one serial port, that 
can be used with either a printer or modem, and an lEEti-4HS 
port. This port, serial in nature, is extensively used in the 
scientific computing environment and allows the Osborne to 
interface with a wide variety of peripherals. 

You don't have to tie up the serial port with a modem, though, 
becau.se a modem is included with the Osborne f. .so the serial 
port can be used with a printer. The Osborne system upgrades 
once in this category as the disks arc upgraded so they can 
accomodate a total of 400K of storage. 

Eagle 

A newcomer to the microcomputer field. Eagle Computers 
has three entries in this price category, the Eaf;le llE-I , Eagle 
lIE-2 and the Eagle PC-E. 

The Eagle llE-l is another of the many Z80A-based systems 
on the microcomputer market. This is important to the user 
looking for a wide base of existing applications software be- 
cause the 8-bii Z80A, and the CP/M operating system that works 
with it, have a wide variety of software available. This software 
will fill just about any need a user might have. 

This system can take advantage of CP/M from the start 
because it includes one 390K double-sided, double-density disk 
as standard. And, any time a system includes a disk, it needs a 
disk operating system to work correctly. The system also has 
more than enough user memory — 64K — to take advantage of 
the sophisticated programs available on the market. 

Input/output is aided by including two standard serial ports 
and two standard parallel ports. This means this machine can 
interface with a wide variety of peripherals. 

The standard 12-inch monochrome display handles the 
industry-standard 80-by 25-line display, thus fulfilling the needs 
of users who have a great deal of serious data or word-processing 
work to attend to. 

The Eagle !IE-2 is essentially an upgraded llE-l system. In 
this version, a second drive is added. 

The Eagle PC-E represents another trend in the microcompu- 
ter field, the trend toward IBM Personal Computer workalikes 
and lookalikes. Under this trend, competing computer man- 
ufacturers are trying to build systems that operate as closely to 
the fBM as possible. The reason the manufacturers are taking 
this tack is because of the popularity of the IBM system and 
because of the wide software base that is rapidly building for that 
system. 

Like the IBM, the Eagle PC-E is driven by a 16-bit 8088 
microprocessor. It features 64K of user memory, about the 
minhnum needed in this type of system for efficient perfor- 




maiice. (Where S-bit systems get along with f>4K easily, Ift-bii 
systems like a minimum of A4K. with 128K preferred, to pro- 
mote et't'icient o[X;ration. This is because the programming is 
more complex.) ^j 

Running under CP/M-S6 (the 16-bit version of CP/M), MS- ( 
DOS — the system used by the IBM-PC — is available us an 
option. The Eagle sy.stem is able to use a disk operating system 
becuuse it comes with one 390K double-sided, double-density X 
5'/j-inch miniOoppy disk drive forstorage. Output is provded by " 
two standard serial ports and one parallel port. The user has the 
option of choosing a video-display device. 

Docutel/Olivettl 

Long a name in the office-equipment field, Olivetti in- 
troduced its M207 microcomputer .system more than a year ago. 
It is one of the few systems marketed that uses the 16-bit Z8001 
microproces.sor, something the potential buyer of this system 
should recognize. 

Currently there is little likelihood a wide software base will 
develop rapidly, unless other manufacturers take advantage of 
this microprocessor. This means the user will be limited to those 
packages offered by the manufacturer and to the support the 
manufacturer offers. 

The buyer who opts for this system will find that it offers 
plenty of potential power. Standard user memory is I28K. or 
about twice the amount offered by most small computer sys- 
tems, and this means the system can handle sophisticated tasks. 

What limits this system in this price category is the fact that 
storage is via cassette. Cas.se ttes, while they can offer nearly 
500K of storage, are much slower than disk-based storage 
systems and, unless the system can act randomly by reading the 
tape back and forth, it is limited to slower serial — one file after 
another — o peratio n . 

The typewriter-style 72-key keyboard and 16-key pad allow 
quick data or numeric entry and input/output is aided with 
standard serial and parallel ports. The 12-inch monochrome 
display is a high-re.solution unit, with an 80-character by 25-line 
text display and respectable graphics. 

Seequa 

A newcomer to the transportable microcomputer market, 
Seequa's Chameleon is an IBM PC-compatible unit, with a 
difference; it uses two CPU's, an 8-bit Z80A and a 16-bit 8088. 
This feature alone offers the user the best of two worlds, CP/M 
and MS-DOS, CP/M is the standard operating system of the 
8-bit microcomputer world, while MS-DOS is rapidly becoming 
the standard operating system of the 16-bit world. This system 
can also run the alternative 16-bit system, CP/M-86. 

Because the Chameleon gives the user access to either pro- 
cessor, he has the option of running any of the many programs 
that exist in both microcomputer segments. Its 1 28K of user 
memory also gives the user enough memory space to take 
advantage of those programs. With its 9-inch monochrome 
display. 80-character by 24-line text mode or a 640- by 200-dot 
graphics mode, the Chameleon delivers a high-resolution video 
output. 

Input is aided by an 83-key keyboard and a n-key keypad. 
Like the IBM PC, the microcomputer has 10 function keys. 
Unlike the PC, the Chameleon has standard serial and parallel 
input and output ports. The IBM-PC's are extra-cost add-ons. 
Programmable in a variety of high-level languages, this 
microcomputer, including two 160K single-sided, double- 
density drives as standard equipment, is a unit that can be used in 
a home or business environment. 



MORROW DESIGNS MICRO DECISIOH UD1 Is a CP/M machine that In- 
ciudes bundled software. 



Albert 

Another newcomer to the microcomputer market is tl 
Albert. An Apple //e-compatible system, the Albert includes 
64Kof RAM and two 5'/4-inchmininoppy disk drives. Because 
it has disk drives, it needs an operating system and it uses 
Apple's. 

Its 59 typewriter-style keys and five special-function keys 



I 



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I 



1*1 daia inpii!, \Uiili.- iiuipiii is IkmuIIciI bv 
Miituhutl scri;!l mkI punitlel purls. It l\;is RCiH uutpul imd it c;iii 
Uispl;i> up 10 25f) colnrs. iirul ii.s lc>il-ilispliiy Ciip;ibiliiy includes 
L-nliLT 40 or Nt) (.hiiracters-iK-'r-liuc. 

Sumicom 

Sumicoiu. unnthcr UL-wconiLT Id the suiall-compuicr system 
U'orld. is iiiiother inunuraelurcr tliai has chosen to take (he 
lUM-vvorkaiike route v^ith its SYsicm t.U). Driven by a 16-bit 
W)88 CPU, this system has I2SK of user memory. 

With a9.'5-key keyboard that includes 8 special-function keys, 
(lata or word-processing input should be easy. A paiailel in- 
terface is included in the basic configuration. 

LNW 

LNW Research is offering another of the many Z80A-based 
systems on the market. As with other 8-bit Z80A .systems, the 
user has access to a wide variety of programming when disk 
drives are added to the configuration. However, in this price 
category, the user will have to content himself with a cassette 
recorder for data storage. The LNWSO Model 2 comes with 96K 
of RAM standard. 

Keyboard input is via a keyboard having 73 keys and an 
i I -key numeric keypad, while output is handled by standard 
serial or parallel ports. The monochrome display provides 80- 
characters by 25-lines of text. 

Cromemco 

Long associated with the microcomputer industry, 
Cromemco has an offering in this price category, the single-user 
C'lO system. This is an 8-bit Z80A microprocessor-based sys- 
tem. It is programmable in several high-level languages. 

Its 64K of standard memory and its standard 390K 5'A-inch 
minifloppy disk drive provide the basics for a very powerful 
system. This means he can take advantage of the CP^M operat- 
ing system and the wide variety of programs available that run 
under it. Input is handled via a 57-key keyboard while output is 
handled either via a standard parallel or serial port. Its 12-inch 
monochrome monitor displays a standard 80-charactcr by 25- 
line text or high-resolution graphics. 

Franklin 

Although this Apple-compatible computer manufacturer has 
only been in the microcomputer field for less than two years, it 
has already gathered a line reputation and has built a rather wide 
product line. Two of those products. make their debut in this 
price category. ,. • , 

The first is the Ace Professional, a busines^-onented system, 
based on the Apple-compatible Ace WOO. It is driven by the 
same 8-bit 6502 microprocessor, and is programmable in BAS- 




BampubBTi 

$1500-$2000 



THE KAYPRO II from Non-Linear Systems l» one o) the most popular 
transportable computers. 



IC, and shares many of the same attributes of the Ace 1000, 
However, this model differs in that it includes a standard 5'/i- 
inch minifloppy disk drive for mass storage, an 80-column card, 
as well as some standard applications software. Since this sys- 
tem runs under an Apple-compatible operating system, it is able 
to take advantage of the many programs aval labie . The keyboard 
is a typewriter-style affair with 72 keys and a 12-key numeric 
keypad. 

Also in this price category , the basic Ace 1000 system can be 
upgraded with the At"e SlOO integral disk drive and housing. Of 
course, that raises the price of the system. 

The other new system here is the top-of-the-line Ace 1200 
which offers the user a way to enjoy the best of two worids: 
Apple and CP/M. Unlike other dual-processor machines on the 
market, that combine either two 280' s for speed or a Z80 and an 
8086/88 microprocessor for access to both the 8 and 16-bit 
worlds of software, the Ace 1200 combines a 6502 and a Z80. 
This gives the user the option of running cither Apple- 
compatible software or CP/M-compatibte software. 

Since it is the top-of-the-line, you would expect it to have 
other features that the other models don't offer and it does. The 
Ace 1200 comes with a standard 128K of user memory and a 
built-in SW-inch minifloppy disk drive for storage. It also fea- 
tures the same keyboard as the other machines in the Ace line, 
but adds standard serial and parallel ports to its configuration 
and its display output capability is 80 columns for CP/M; forty 
colurrms for Apple programs. 

Hewlett-Packard 

A new Hewlett-Packard system makes its appearance in this 
category, the first of this manufacturer's full-blown HP86A. In 
this price level, the system is just the basic unit and includes one 
parallel port. It has a 59-key keyboard,. 20-key keypad and 
special-function keys and is programmable in several high-level 
languages, including BASIC. 

Another of H-P's handheld systems, the HP75C, continues to 
become much more powerful in this price category. In its first 
upgrade, the user memory increases to 24K, enough to handle 
sophisticated routines in the field. In its second upgrade, a 
general-purpose I/O port is added. Don't unerestimate the im- 
ponance of this second upgrade. With this port, the HP75C can 
now interface with a variety of peripherals and can become the 
heart of a very powerful portable system. 

Commodore 

As we have seen in the other price categories, Commodore 
Business Machines is a microcomputer manufacturer with a 
broad line, and its machines make their debuts in several price 
categories. This classification is no exception as OEM in- 
troduces the SuperPET, a dual-processor model driven by 8-bit 
6502 and 6809 microprocessors. 

The SuperPET is the basis of a powerful dual-processor 
development system and comes with 96K of memory as stan- 



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dard. Also standard, is ihe 12-inch monochrome display, that 
delivers an 80-chardcters by 25-1 ines text display. At this level, 
the speed of this system is somevifhat limited by the need for 
cassette storage. But, this changes in other price categories as 
disk drives are added, 

[ts keyboard is a standard typewriter-type unit and it has a 
separate numeric keypad. This keyboard lets the user write 
programs in the high-level languages available for this machine. 
Those languages include; BASIC, COBOL, APL, Fortran, and 
Pascal. 

Input/output is provided by a standard serial port a user can 
use to attach either a printer or a communications modem, 
should he have need of hard copy or communications ability. 

The VlC-20 and 64 are still being manufactured in quantity. 
Versions are now available with two S'A-inch disc drives. This 
increases the effectiveness and flexibility of these units. When 
the VlC-20 is equipped with two drives it can handle both data 
and program disks simultaneously, and no longer is the user 
limited to using one disk to copy files. Instead, he can use two 
disks, and gain a manyfold increase in system speed and capabil- 
ity. 

In the same way, a second disk drive is added to the Com- 
modore 64. 

Sanyo 

The MBC JOOO is another of the many 280A, 8-bit systems in 
the small-computer market and because it is, the system can take 
advantage of the CP/M operating system and the many programs 
available under it. The system comes with one standard 328K 
double-sided, double-density SW-inch minifloppy disk. 

With 64K of standard user memory, this system can perform 
highly sophisticated tasks. Data input is facilitated by the 55-key 
keyboard, that includes five multifunction keys and a ! 0-key 
numeric pad. Input/output is aided by a standard serial port and a 
standard parallel port. The 12-inch monochrome display han- 
dles 80-characters by 25-Unes of text. 

Radio Shack 

Radio Shack has diree systems that upgrade in this price 
category — ^the Color Computer, Model III, and Model 4. The 
Color Computer becomes fully configured by adding a second 
disk drive. 

The Model lit upgrades twice. The first step is to add a 1 84K 
5'/4-inch minifloppy drive. The second upgrade gives this sys- 
tem a serial port. 

The Model 4. a newly introduced unit, becomes even more 
powerful when a I84K minifloppy-disk drive is added. The 
second upgrade adds a second dirive to this system. 

Toshiba 

The Toshiba TIOO lap computer upgrades in this price cate- 
gory. In the first upgrade, the TJOO goes portable and its user- 
memory area is expanded by adding nonvolatile RAM cartrages 
that hold their contents even when unplugged from the system. 

Also, the TIOO becomes configured with two 280K double- 
sided, double-density disk drives. This upgrade gives the user 
access to the CP/M operating system and the many programs 
that work under it. For the user who may not want to be limited 
to the liquid-crystal display, video monitors are available. 

NEC 

Both NEC systems, the PC-6000 and PC-8800. include two 
upgrades. The first adds a green monochrome video display to 
the unit. This type of dedicated, high-resolution monitor lets the 
user take full advantage of the graphics capability of this or any 
other system, something a home television set can't match. The 
second upgrade shows you what happens to the price when the 
color monitor is added to the configuration. 

The PC-8800 becomes a more powerful unit when we add the 
8086 16-bit card. This gives the user the option of taking 
advantage of the rapidiy growing variety of 16-bit programs. In 
later stages, as disks are added, the user can take advantage of 



either the world of CP/M or MS-IX)S and the many programs 
available diat mn under those systems. 

Apple 

In its first upgrade, the Apple lie becomes more versatile 
when the screen enhancement card (80-coIiimn) and a video 
monitor are added. These changes, alone, give the user the 
advantage of the graphics capability of this system, plus letting 
the system handle serious word-processing or data processing 
chores. 

The second upgrade gives this system output capabilities by 
adding a parallel printer port. Now the user can have hard copy 
backups of the material he is working on. 

Atari 

Two Atari systems upgrade in this price category, the 1200XL 
and the 600XL. The lIOOXL's upgrade adds a second disk drive. 
The 600XL also receives a second floppy disk drive. 

Panasonic 

The HHC series, (HI 400 and HI 800), of handhell 
minimicrocomputers become true systems in this price category 
with the added color display adapter. It can be used to interface 
with a color television, and a serial port. 

Heath 

The Heath HS'89-2(3) system reaches its full configuration in 
this price category by adding a second drive. 

Since it is a kit, the HC 89-2(3) system is a good learning 
experience for the potential computer tispr who wants to know 
his system inside and out. 

Spectra video 

The SV-318 system becomes fully configured in this price 
category and its first upgrade adds a 256K 5 '/i-inch minifloppy 
disk drive. This gives the user a manyfold increase in data access 
and retrieval time. Adding a second drive, also in this price 
category, nudces this system even more versatile. 

For the SV-328, the user gains more memory area and a disk 
drive for storage, thus increasing this system's versatility. 

Netronics 

By adding a disk drive, disk-drive controller and operating 
system, the Explorer/85, an 8085 -based small -computer be- 
comes much more powerful. It now has disk storage and speed, 
and it can access and use the many programs that run under its 
operating system. 

The new Netronics system, the Explorer/88-PC , (also a kit) is 
a fully configured system at this point. The user who does take 
the time to put the kit together will be rewarded with an intimate 
understanding of an IBM-compatible microcomputer system. 

Texas Instruments 

By this time in the price categories, the Texas Instruments 
T1-99/4A is becoming a very powerful system. Not only is it 
driven by a 1 6-bit microprocessor, but it now has a disk drive for 
mass storage; it is now a far cry from the low-cost unit that was 
introduced in our first price category. 

Sony 

At this point in the SMC-70's price path, it gains a serial 
interface for output. The RGB/composite video/RF-modulator 
gives the user several choices for video output. 

TeleVideo 

The transportable Teieioie gains even more versatility when a 
second disk drive is added. This frees the user from the restric- 
tion of being tied to using only one drive. 

Casio 

The X-9000P becomes more versatile and able to perform 
more sophisticated tasks by adding 16K of RAM. R-E 





■Elcclranics fgnn gnx 



BampuuBT 

$2000-$2500 



The computer becomes 

more busmess-like than 

personal as we cross the $2000 

mark. 



^SOOO to #ssoo 



MARC STERN 



IF THERE IS ANY LINE OF DEMARCATION IN THE SMALL- 

computer world, we have reached it, the S2000 barrier. Many of 
the systems that had their origins in the iow-cosi regions of the 
microcomputer marketplace, have, by now, reached their full 
configurations and those that continue in our chart.s become 
more and more oriented toward business, rather than home use, 
because of the powerful levels they attain. 

Because of this you will fmd the systems that join our listings 
now are much more fully configured right out of the box. It's the 
usual practice in the industry to include at least one disk drive as 
standard equipment in this pricing level and to include at least 
64K or more of user memory. And on those systems where disks 
are included as standard, the disk-operating system is also a 
standard or reason able -cost option. 

It's also an important line of demarcation in the type of 
microprocessor unit driving the system we will be discussing. In 
the $2000 region, it seems that more and more of the systems are 
using standard 16-bit microprocessors, as opposed to 8-bit 
CPU's. This stands in marked contrast to a year ago when the 
majority of systems on the market were 8-bit systems. 

Why is the industry moving toward the 16-bit CPU? The most 
obvious reason is because IBM has chosen to market a 16-bit 
microcomputer and the rest of the industry is moving to cash in 
on the market created by that move. But another, not so obvious 
reason, is because the 16-bit CPU allows small-computer sys- 
tems to achieve true power. They can handle applications that, a 
few years ago, were iimited only to mainframe and powerful 
minicomputers, hi fact, the 16-bit microprocessors now on the 
market and those planned for the near future blur the distinction 



between the minicomputer— a more powerful, business- 
oriented system- — and the microcomputer. 

So, as we cross the line of demarcation, we find 12 new 
systems joining the microcomputer field. Some of them are from 
companies whose names are already mentioned in earlier price 
categories, while others are new to the field. 

Let's begin our look at this price category with those systems 
from the new niimufacturers, moving on to thaie from es- 
tablished firms , and wrap it up with a look at some of the systems 
that have upgraded. 

Access Matrix 

Access Matrix Corp. is a new entrant to the microcomputer 
market and its product, the Access, is a full-featured transport- 
able computer, based on the near-standard 8-bit Z80A CPU . 
Widi this CPU and the features this small -computer packs, a"' 
user needs little more to fulfill his computing needs. 

For starters, the Access includes two standard 184K single- 
sided, double-density minifloppy disk drives for storage and 
64K of RAM. With this combination, the user has acce.ss to the 
wide variety of ready-io-run programs available underthe CP/M 
operating system, which is another 8-bit industry standard. 

Programmable in BASIC, this unit features a typewriter-styie 
keyboard, that has 62 keys, 15 special-function keys and a 
15-key numeric keypad. Input/output is provided by standard 
seriaS and parallel ports. 

The 7-inch built-in amber CRT display is capable of an 
80-character by 24-!inc text mode, which is important for 
serious word-processing or data entry. 



O 
o 

m 

33 



129.^11 





^^ TABLE 1— $2OOO-$25O0 
^Kn Manufacturer 


Model 


Price 


CPU 


Word Length 


Operating System 


Languages ™ 


B Casio, Inc. 


FX-9O00P 


$2015 


280A-compaHble 


B-bit 


N/A 


BASIC 


■ Franklin Computer Corp. 


Ace 1000 


$2044 


6502 


8-bit 


Appie DOS 3.3 
compatible 


BASIC 


I Hewlett-Packard 


HP86A 


$2090 


Not announced 




N/A 


BASIC, Pascal, FORTFIAN 


H Panasonic Co. 


HI 400 


S2091 


6502 


8-bit 


SNAP 


feASiC 


B Apple Computer 


Apple lie 


$2129 


6502A 


8-bit 


N/A 


BASIC ^ 


B Franklin Computer Corp. 


Ace Professional 


$2144 


6502 


8-bit 


Apple DOS 3,3 


BASIC 


■ Hewlett-Packard 


HP75C 


$2160 


Not announced 




N/A 


BASIC 


B Sord Computer 


M23P 


$2185 


Z80A 


8-bit 


Proprietary, 
CP/M-compatible 


BASIC, Pascal, FORTRAN 


B Panasonic Co. 


H1800 


$2191 


6502 


8-bii 


SNAP 


BASIC 


B NEC Home Electronics 


PC-8800 


$2197 


ZaOA-compatible 


8-bit 


N/A 


BASIC 


B Heatti Company 


HS-1 00-31 


$2199 


8085/8088 


~sm^bh 


Proprietary 
2D0S 


BASIC 


B Toshiba America 


T300 


$2200 


8088 


16-bit 


MS-DOS, CP/ 
M-86 


■ BASIC 


B Seequa Computer Corp. 


Chameleon 


$2219 


ZedA/8b86 


s/ie-bit 


MS-DOS, 
CP/M, GP/M-se 


BASIC, FORTRAN. Pascal, 
COBOL, FORTH, LISP as- 
semb., 0, PU1 


B Spectravideo 


SV-328 


$2273 


280A 


8-bit 


CP/M 


BASIC 


V Netronlcs Research 


Explorer/85 


$2284.70 8085 


3-bit 


CP/M 


machine. BASIC 


1 Texas Instruments 


TI-99/4A 


S2285 


TWS9900 


15-bit 


Proprietary 


BASIC 


1 Radio Shack 


TRS-80 Model 111 


$2295 


280A 


8-bit 


TRSDOS 


BASIC. COBOL. FORTRAN. 
Assembler 


K Commodore Business 
■ Mach. 


Pet 64 


$2295 


6500 series 


8-bit 


Proprietary 


BASIC 


■ Franklin Computer Corp. 


Ace 1000 


$2343 


6502 


8-bit 


Appie DOS 3.3 
compatible 


BASIC 


■ Heath Company 


HSA-120-31 


$2349 


8085/8088 


8/16-bit 


Proprietary 
ZDOS 


BASIC 


■ Sord Computer 


M23P 


$2380 


280A 


8-bit 


Proprietary, OP/ 
M-compatible 


BASIC. Pascal, FORTRAN 


^K|| Seequa Computer Corp. 


Chameleon 


$2394 


Z80A/8088 


8/16-bit 


MS-DOS, CP/ 
M, CP/M-86 


BAStC. FORTRAN, Pascal, 
COBOL, FORTH, LISP, 
Assembler, C, PL'1 


H Morrow Design 


MD3 


$2395 


280A 


8-bit 


CP/M 


BASIC 


H Hewlett-Packard 


HP75C 


$2455 


Not announced 




N/A 


BASIC 


^^^Sanyo 


MBC1200 


$2495 


280AS 


8-bit 


CP/M 


BASIC, Pascal, FORTRAN, 
Macro-80 J 


^^^1 Osborne Computer Corp. 


Executive 


$2495 


Z80A 


a-bit 


CP/M 


BASIC 


V Access Matrix Corp, 


Access 


$2495 


2S0A 


■ e-bit 


CP/W 


BASIC ' 


^^■1 Intertec Data Systems 


Superbrainll-Jr, 


$2495 


ZaOAs 


8 -bit 


CP/M 


BASIC, FORTRAN 


■ Canon USA 

O 


AS100 


$2495 


6088 


16-bil 


MS-DOS, CP/ 
M-86 


BASIC, COBOL 


g Apple Computer 


Apple III 


S2495 


6502B 


8-bit 


Apple SOS 


BASIC, Pascal 


■j§H| Tele Video Systems Inc. 


TS 803 


$2495 


Z80A 


8-bit 


CP/M 


COBOL 


W^ Toshiba America 


T300 


$2495 


8088 


16-bit 


MS-DOS, CP/ 
M-86 


BASIC 


Bso 








^^^ 







^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^B 


1 

r 


Memory/Slorage 


Keyboard 


1/0 


Display 


Comments l^^^l 


32K/cassette Interface 


67 keys, 16-key keypad 




5.5-inch, 32 >c 16 mono- 
chrome, 256 X 128 
Oraphics 


2aK RAM S 




e'4K'2 S V^" floppy disk 
drives 


72 keys, 12-key keypad 


game controller 


40 >; 24/280 x 192 graph- 
ic capability 


2nd floppy disk drive r^^^H 


1 


64K 


59 keys, 20-key keypad, 
14 special function 


1 parallel 


9" monochrome CRT, 80 
X 25 text 


monochrome CRT 




^^K.' cassette interface 


65 calculator keys in 
typewriter arrangement, 

red efin able 


input'output adapter/ex- 
pansion bus'1 serial/ 
modem 


1-line X 26-character liq- 
uid crystal display/color TV 
adapter 


modem/cassette interface 


t 


64Ki'cassetfe interface 


63 -key typewriter, 2 
programmable 


1 parallel, 1 serial, game 
controller 


12- inch monochrome 
CRT/80-column card/80 x 
24 text mode 


serial port 




QAKIZ 5 '/4" floppy disk 
drives 


72 keys, 12- key keypad 


game controller 


40 X 24/280 X 192 graph- 
ic capability 


2nd drive 


1 


24K/cassette recorder 


61 keys, multifunction 


general purpose I/O port 


32 character one-line LCD/ 
video Interface 


video interface 




128K'2gtiK microfloppy 
drives 


60 keys, 20-key keypad, 

9 Special function 


2 serial, 1 parallel 




basic system 




24K/cassette interlace 


65 caicuiator keys in 
typewriter arrangement, 
redeflnable 


input/output adapter/ex- 
pansion bus/1 serial 


Mine x 26-character liq- 
uid crystal display/color TV 
adapter 


modem/cassefte interface 




s4K'casselte interface/disk 
interface 


81 keys, 5 muitifunction, 
10-key keypad 


1 parallel, i serial 


14-inch color CRT/640 x 
400 res./ 80 x 26 text 


color display ^^ 




■■192K/1320KDS/DDSV4'' 
floppy disk drive 


60 keys, i4 function 
keys, 18-key keypad 


2 serial, 1 parallel 


monoctirome 


basic version, includes 1 ^^^H 
drive ^| 


i 


ig5K' 1 G40K DS,'DD 5 V," 

drive 


67 keys, 18 spec ai func- 
tion, 10 edit, 18-key 
keypad 


1 parallel, 1 serial 




basic system ^^^M 




192K'2 iSOK SS/DD 5 V^' 
floppy disk drives 


83 keys, 10 function, 17- 
key keypad 


1 serial, 1 parallel 


9-Inch monochrome/80 x 
24 text/640 x 200 graph- 
ics/RGB output 


user memory expands to H 
192K, RGB output card add- H 

■ 




"WK'2 2SeK 5 y/ floppy 
drives 


87 keys, 10 program- 

mabie, numeric keypad 


1 serial, 1 parallel 


80 x 24 text mode ca- 
pabfiity/16 colors 


2nd drive ^^H 




64K/2 8" floppy disk drives 


56 keys 


JM/A 


12-inch monochrome CRT 


second disk driv. ^^^B 




4aK,'2 floppy disk drives 


standard 


1 serial, 1 parallel HEX- 
BUS expansion unit, pe- 
ripheral interface 


16 colors 


2nd disk drive ^I^^^H 




48K/2 1B4K 5 VI" floppy 
disk drives 


64 keys, 12-key keypad 


1 parallel, 1 serial 


12-inch monochrome/64 
(32] X 16 text mode 


serial port, second drive |H 


» 


64K<'dual 5 W floppy disk 
drives 


standard, numeric key- 
keypad 


1 serial 


integral display 


standard 12-inch mono- _^^^H 
chrome display; dual drives j^^^l 
added ^^^H 




64K/2 5 W floppy disk 
drives 


72 keys, 12-key keypad 


game controller 


40 X 24/280 X 192 graph- 
ic caoabllitv 


2nd drive added to Ace 1000 "^l 




i^lKsi 520K DS/OD 5 '/*" 
floppy disk drive 


60 keys, 14 function 
keys, 18- key keypad 


2 serial, 1 parallel 


monochrome version 


basic system ^| 


1 


128K/2 290K microfloppy 
disk drives 


60 keys, 20-key keypad, 
9 special function 


2 serial, 1 parallel 


12-inch green CRT 


CRT added fl 




256K.'2150KSS/DD'Svi" 
floppy disk drives 


83 keys, 10 function, 17- 
key keypad 


1 serial 


9-inch monochrome/80 x 
24 text'640 X 200 graph- 
ics/RGB output 


user memory expands to B 
256K ■ 




S41C'2 320K5y4''noppy'" 
disk drives 


standard 


1 senai, 1 parallel 


monochrome CRT 


dnWcapacity Increases with M 
DS/DD drives ■ 




24K;'cassette recorder 


61 keys, multifunction 


general purpose I/O port 


32 character one-line 
LCD/9" 80 X 25 CRT 


CRT added ^^M 


1 


64K/1 640K slim line DS/ 
DD floppy disk drive 


50 keys, 15 program- 
mable, 18- key keypad 


1 parallel, 1 serial 


12-inch monochrome/eo x 
25 text/640 X 400 graph- 
ics 


higher-density disk drives I^^^H 


e^FC'S 102K 5 V^' floppy 
disk drives 


57 keys, 12-key keypad 


1 'serial, 1 parallel 


7-inoh monochrome [am- 
ber)/80 x 24 text mode 


basic system ^1 




e4K/21S4KSS/DD floppy 
disk drives 


62 keys, 15 special func- 
tion, 15-key keypad 


2 serial, 1 parallel, 1 

iEeE-4a8 


7-inch monochrome (am- 
ber)/80 X 25 text mode 


full-featured transportable ^| 
computer ^^ 




e4K''2'350K I357DI3T?4" 
floppy disk drives 


62 keys, i 8-key keypad 


2 serial 


12-inch monochrome/80 x 
24 text mode 


basic system ^B 




t^ot announced/2 640K 
DS/DD 5 y*" tloppy disk 
drives 


standard 




monochrome dispiay/80 x 
25 tejrt mode 


basic system fl 




128K'1 140K SS/DD 5 Vl" 
floppy disk drive 


61 -key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler 


280 X 192/560 x 192 
graphics capabitity/80 x 
24 text 


basic system •ms^^B 




64K/2 368K 5 Vt" DS/DD 
floppy disk drivBs 


72 keys, 16 program- 
mable, 17-key keypad 


2 serial 


14-inch monochrome/80 x 
25 text 


basic system 3 




192K' \ S40K DS/DD S W" 
drive 


67 keys, 18 special 
funct., 10 edit, 18-key 
keypad 


1 parallel, 1 serial 


80 X 25 monochrome 


display added 3J 

-A 


1 


»- 




^^^^^^^^^H 


^^H 


1 131 fl 



o 



o 

UJ 



15 ; 
132 



Intertec Data Systems 

Although Inrertec is a long-time veteran of the microcomputer 
wars, few consumers have probably heard of Us products. The 
prime reason for this is that it has addressed the business market. 

In this price category, we find one of its several products, the 
Superbrain II Jr. . another of the 8-bit systems on the market 
using the Z80A as the CPU. 

However, the Superbrain U Jr. departs from standard 
philosophy in its use of dual processors. Although there are 
several systems on the market today with two mircroprocessors, 
the chances are very good that one will be an 8-bit device, while 
the other is a 16-bit device. Thi.s gives the user access to the 
established base of 8-bit software and the rapidly growing base 
of 16-bil software. The Superbrain 11 Jr., on the other hand, 
uses dual 8-bit processors for speed. While one is busy handling 
the processing (computing) chores, the other is handling house- 
keeping functions, such as keyboard input and screen output. 
That is a way to achieve faster throughput. 

The Superbrain U Jr., is an all-in-one unit, with dual 350K 
double-sided, double-density minifloppy-disk drives, 64K 
RAM, and runs CP/M. 

Programmable in high-level Fortran or BASIC, this unit 
features a 62-key typewriter-style keyboard with an 18-key 
numeric keypad. Two serial ports are also included. 

Video output is via a built-in 12- inch monochrome display 
unit, capable of 80-characters by 24-liiies in the text mode. 

Canon 

If the inclusion of the name Canon in a computer hardware 
supplement startles you, it shouldn't. The reason is Canon is not 
only big in the camera field, but also in the office-equipment 
field. And because it is, its development of a microcomputer 
system isn't really any surprise. The AS J 00 is a new system and 
like many other machines on the market, it is an IBM-workalike. 
It runs under MS-DOS, although Canon is also hedging its bet 
by providing access to CP/M-86, the 1 6-bii version of the CP/M 
operating system. This second option gives the user access to 
many programs that run under this operating system and, if the 
market swings in its direction, then the u.ser also has this advan- 
tage, too. 

That it can use an operating system indicates that this system 
has floppy disk drives, and it does. Canon provides the user with 
two 640K minifloppy disk drives for mass storage and retrieval . 

Programmable in BASIC and COBOL, the ASlOO has a 
typewriter-style keyboard for data input. Data is output to an 
80-character by 25-line monochrome display, which is the stan- 
dard for serious data or word- processing work, 

Apple 

Although Apple's name has appeared before, it has a new 
system appearing in this category, the Apple III, a more power- 
ful, business-oriented system than other Apple offerings. 

The Apple II! system has twice the RAM of the Apple He with 
128K and it features a standard 140K single-sided, double- 
density minifloppy disk drive for storage. 

A sophisticated system, the Apple Ill's operating system is 
also more sophisticated. Called Apple SOS, it allows the user 
access to not only the software written to operate under it, but the 
existing base of software written for other Apple computers. 

Yet, despite its sophistication, the Apple HI is driven by the 
same 6502 8-bit microprocessor that drives the other members 
of the Apple family. Its keyboard is a standard typewriter-like 
affair with 61 keys, two programmable keys and a 17-key 
keypad. (It was quite an improvement over the old Apple II and 
Apple Il-Pliis keyboard.) 

This system also differs from the rest of the Apple lineup in 
two other key areas. Jt is provided with a standard serial port and 
it has a standard 80-column display capability. (Other members 
of the family require add-on video cards to provide this func- 
tion.) This display capability also can be used to generate up to 
560- by 192-dot graphics. The actual display device iis a user 



option. 

The Apple lie becomes more flex i bile in its input/ output* 
capabiUties here with the addition of a serial port. 

Heath 

Heath Co. has two kits that debut in this price spectrum, both 
of which give the user an inside-out knowledge of his 
microcomputer system, the HS-IOO-31 and the HSA'I20-3) . 
Both microcomputers are kit versions of the Zenith Z-/00 series 
of 8/16-bit computer systems. About the only real difference 
between the two systems is that the HS-IOO-31 is the low-profile 
version — no monitor included — and the HSA-120-31 is the all- 
in-one unit^ — monitor, keyboard, and system unit in one box. 
With this in mind, what follows will apply to both. 

Driven by a dual 8085/8088 processor set, this scries has 
access to the world of 8- and ! 6-bit programs and, although it 
seems like an IBM-workalike, it doesn't run under MS-DOS. 
Instead, it runs under the proprietary Zenith Disk Operating 
System— ZDOS. 

A 320K double-sided, double-density floppy is built into its 
standard configuration that includes !92K RAM. 

Programmable in BASIC, that unit features a 60-key key- 
board that includes 14 function keys and an 18-key keypad. 

About the only remaining differences between the two sys- 
tems is that the all-in-one HSA-120 has two serial ports and one 
parallel port, while the HS-IOO has one serial and one parallel; 
and, the HSA-120 has a standard monochrome video display, 
while the HS-lOO leaves it to the user's option. 

Toshiba 

Toshiba has another system which debuts in this price cat&-" 
gory, the T300, another IBM-workalike. 

Driven by a 16-bit 8088 CPU, the T300 provides the user with 
192K of standard memory. A standard 640K 5 '/4-inch miniflop- 
py disk drive is provided for data storage and retrieval. 

Programmable in several high-level languages, data is en- 
tered via a typewriter- style keyboard with 67 keys. The key- 
board also includes 18 special-function keys, 10 editing keys, 
and an 18-key numeric keypad. 

Eiquipped with standard serial and parallel port.s — extra-cost 
options on the IBM PC — the 7JCW is a flexible unit, it upgrades 
once in this category. That upgrade provides the user with an 
80-character by 25-line video display monitor. In its first coo- 
figuration, that device is left to the user's option. 

Sord 

Another Z80A-based system debuts in this manufacturer'! 
lineup, the M23P with 128K of RAM as standard. TheZBO CPU 
gives you access to the world of CP/M, 

In a departure from usual practice, the M23P is equipped with 
a microfloppy-disk drive capable of holding 290K of data. Very 
few manufacturers now offer this type of drive and there is an 
ongoing controversy about standardization. 

Sporting a typewriter-style keyboard with a 20-key pad, 60 
keys and 9 .special-function keys, the M23P relies on this device 
for input, either in the high-level programming languages this 
system recognizes or word-processing applications. 

An almost fully configured system, it includes an input/output 
adapter, expansion bus, and a serial port. This system also 
upgrades once in this category with the addition of a 12-inch 
green monochrome video display device. 

Tele Video 

Another single-user system from TeleVideo makes its appear- 
ance in this price category, the 75 H03. 

Driven by an 8-bitZ80A microprocessor unit, the modular TS 
803 runs the industry-standard CP/M operating system. The 
computer includes dual 368K double-sided, double- density 
minifloppy disk drives for .storage. 

Programmable in the high-level COBOL language, the IS 
803 is aimed primarily at the business community and its level of 



I 



standard features, such as 64K of user memory and two standard 
serial communications ports, indicates this. 

Equipped with a typewriter-style keyboard containing 72 
keys, 16 programmable keys and a 17-key numeric keypad, the 
TS803 a!so features a standard 14-inch monochrome CRT that is 
capable of 80-characters by 25-Unes of display. 

Osborne 

Osborne Computer Corp. is the firm that kicked off the 
portable-computer revolution and it has a new offering that 
debuts in this price spectrum, the Executive. 

Although based on its Osborne 1 — described elsewhere in this 
supplement — the Executive is substantially upgraded. 

Still driven by the same 8-bit Z80A CPU, the Executive has 
dual singie-sided, double-density disk drives, rather than the 
single-density drives of the Osborne I. 

It also sports the same 62-key detachable keyboard, but its 
input/output capabilities have been upgraded with the addition 
of a second serial port and a parallel port for a printer. 

Further, the video display has been upgraded to a 7-inch 
amber monochrome unit, capable of an 80-character by 24-line 
text display. 

The most important improvement in this system is the ability 
of it to recognize a variety of disk formats and its capability of 
reading files generated on those systems. This means it can be 
used with a variety of desktop office-based systems and files can 
be transported. 

Sanyo 

Sanyo's MBC 1200 upgrades in this price segment. Driven by 
dual ZSOA 8-bit CPU's, the MBC 1200 relies on one of those 
devices for information processing, while the other handles the 
housekeeping chores. In this version, theMBC 1200 has more 
storage capacity with the addition of a higher-density half-height 
640K minifloppy disk drive. 

Morrow 

The last new system that debuts in this category is the Morrow 
MD3 Business Computer, a full-featured smail-busJness compu- 
ter. Like the others in the MZ)-series, this micro is driven by an 
8-bit Z80A CPU. It comes equipped with 64K of user memory 
as standard. 

Using the industry-standard CP/M operating system, the 
MD3 is sold with a powerfiil set of programs included in the 
price. These programs include the basic applications needed by 
a small business or serious home user and, in fact, may be all the 
user needs. 

The MD3 has two 320K 5 'A-inch mini floppy- disk drives for 
storage. It also has a standard typewriter-style detachable key- 
board for user input. Input/output is further provided by two 
serial ports. This system features a monochrome momtor. 

Franklin 

Two Franklin systems upgrade in this price category, the Ace 
J 000 and the Ace Professional. These systems gain a second 
disk drive for greater storage and this, of course, raises the price 
of these devices. 

Why is a second drive so important? It provides a many fold 
increase in the flexibility of the system because the user is no 
longer limited to using just one disk for program and data 
loading. Instead, the program can be loaded and kept in one disk 
drive, while the other is used to house the data disk. 

Panasonic 

The ////C-series of handheld computers becomes even more 
fiiliy configured with the addition of a modem/ cassette in- 
terface. Now this system has become a true portable, capable of 
acting as a workstation in the field, 

Hewlett-Packard 

Another handheld system, the HP75C becomes fully con- 
figured with the addition of a monochrome video-display de- 



vice. The importance of this upgrade to a handheld system can't 
be overestimated. The reason is the user is freed from the 
necessity of using a one-line Uquid crystal display. Now he can 
see his input and the system's output in a more convenient 
manner. 

This upgrade wouldn't have been possible without the other 
upgrade that occurs in this segment, the addition of the video 
interface. 

The same type of upgrade occurs to the HP86A microcompu- 
ter system. It has also received a monochrome display. The 
reason this is important is the user now gains far higher resolu- 
tion by using a dedicated video device, rather than trying to use a 
home television with its resolution limitations. 

S^Kfua 

The dual -processor CZ80A, 8088) Chameleon upgrades twice 
in this price category. In its first upgrade, the buyer receives an 
increase in user memory to 192K. This gives it enough memory 
to handle most 8- or 16-bit program on the market. This expan- 
sion also gives it color graphics capability. 

The second expansion brings user memory to 256K, which is 
becoming one of the standards of the IBM-workalike world. 
Yes, many of the IBM-worfcalikes do have less memory, but it 
seems that most of them are urging their buyers to upgrade 
memory to at least 256K. 

Radio Shack 

In this price category, the TRS-80 Model III reaches its full 
configuration with two drives and a serial port. This all-in-one 
system is a powerful unit in this configuration. 

Commodore 

The Per 64. based on the Commodore 64 system, also be- 
comes fully configured in this price category 

The addition of dual floppy drives for data storage and access 
makes this a powerful system for either the business or home 
user. 

Texas Instruments 

Believe it or not, the low-cost TI-99I4A can become a high- 
powered home system and it does, indeed, have a version that 
appears in this price category. 

The addition of a second drive makes the TI-99/4A a system 
that can be used by either the serious home user or the small 
businessman who needs a small computer system. The second 
drive adds flexibility to the system. 

Panasonic 

Panasonic's PC-SSOO series is still an 8-bit microcomputer at 
this point. Another upgrade or two will be needed to make it a 
dual -processor 8/ 16- bit machine. However, in this configura- 
tion a user should find it very powerful . 

At this point, color graphics output capability is added to the 
PC-8800 system with the addition of a high- resolution, ROB 
video display device. 

Spectravldeo 

At this point in the price categories, the SV'328 becomes fully 
configured. A second drive is added at this point, which pro- 
vides the user added flexibihty and makes this system a fuU- 
featnred choice for the small business or home user. 

Netronlcs 

Another system that reaches its full configuration is the 
Exphrer/85 from Netronlcs. This upgrade adds a second disk 
drive to its conflgiu'ation that brings with it greater storage 
capability and far better system flexibility. 

Casio 

Still a very basic system, the Casio FX-9000P has its memory 
increased to 32K at this point, it still relies on a cassette recorder 
for storage. H-E 



O 

CD 

m 



133 






SUPERKIT 



.N 



•^^i:•J 



DfitjIEkctrHiicKH 



A PRACTICAL DIGITAL 
ELECTRONICS KIT FOR 
LESS THAN $40 I 
Suitable for Beginners 

Meet the challenges of today's Incredibly rapid changes 
in electronics quickly and easily. This innovative kit 
IS as excitmg as the circuits you build and explore^ 



Learn (he wonders of digital electronics and see how 
quickly you ar& designing your own circuits with ihe 
SUPERKIT which contains: 

Seven TTL integrated circuits, breadboard, LED's, and 
all Lhe DIL switches, resistors, capacitors and other 
conr^ponents io buiid interesting digital circuits; plus 
a very clear and thoroughly tested instruction manuai. 
Thls course teaches Boolean logic, gating, R-S and J-K 
Hipflops, shift registers ripple counters and hall adders. 
You will learn about fault finding, improvisation and 
sub-system checking and the manual asks plenty 
of questions, but never leaves you stuck for an answer. 
You don't even need a soldering Iron! Usir^g the same 
breadboard you rnay construct literally millions of 

different circuits S39.95 

Order one of our written Courses to complen^enl 
your SUPERKIT. 

Digital Computer Logic & Electronics - An Introduction 
to digital electronics designed specifically for the 
raw beginr^er. If you're Just starting with Digital 

Electronics this is the Course lor you S13,96 

DIGITAL COhAPUTER DESIGN ■ A totally revised and 
updated Course using the programmed learning system. 
This book Is not Intended for beginners but Is ideally 
suited to engineers, technicians and hobbyists who 
want to know more about dlqltal electronics S17.95 



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$2500-S3000 



Seven new manufacturers 
join our expanding list 



^S500 to ^SOOO 



MARC STERN 



IF YOU THOUGHT THE MECROCOMPUTER FIELD BELOW THE S2000 

level was crowded, then take a look at the chart accompanying 
this article; this price area is even more crowded. Almost every 
week there seems to be a new microcomputer entry in this or the 
higher-priced categories. And, as noted in the previous story, 
there are more and more 16-bit machines coming out. 

With this in mind, a closer look shows that 18 new machines 
join the market fray. Some of them are from companies whose 
names are already familiar, while others are from firms whose 
names appear here for the first time. 

Seven manufacturers join the list here, all featuring fairly well 
configured, powerful systems. Among them there is a fairly 
even split between 8- and 1 6-bit microprocessor units. 

The other 12 new machines come from a I ready -mentioned 
manufacturers, while the rest of the listing presents upgrades of 
systems that were introduced in lower-priced levels. 

Without further ado, let's begin our look at the new offerings 
from the new manufacturers. From there we'll look at what the 
familiar firms have to offer and we'll tie up this piece with a peek 
at how various systems upgrade. 

Wang 

Perhaps best known in the business field, Wang has long held 
a dominant position in the word-processing/mi nieomputer mar- 
ket. Its Wangwriter has set the standard in this field for years. 
Now it has an offering in the microcomputer field, its Pro- 
fessional Computer. 

An iBM-workalike, it differs from the Personal Computer 
because it uses a 16-bit 8086 CPU. However, the 8086 recog- 
nizes the 8088 's instruction set and will work with any sofrware 
written for the 8088. With the 128K standard user memory, the 
buyer has a powerful system from the start. 

Equipped with a standard 128K single-sided, double-density 



floppy disk drive, the Professional runs under MS-EKJS. CP/M- 
86 is also available. 

Programmable in several high-level languages, this data can 
be input via a 101-key typewriter-style keyboard, that features 
16 programmable keys, as well as an 18-key numeric pad. 
Input/output is handled via standard parallel and serial ports. 

Compaq 

One of the major newcomers in the IBM-compatible field, 
Compaq Computer's Compaq is nearly totally compatible with 
the IBM offering. 

A transportable, the Compaq is driven by a 1 6-bit 8088 CPU, 
the same one used by the PC. It features more standard user 
memory: 128K. 

Operating under Compaq DOS, an IBM workalike disk- 
operating system, the Compaq can use many of the programs 
written for the IBM-fC. Further, it comes with one double- 
sided, double-density 320K minifloppy disk drive as standard 
equipment. 

Like other small-computer systems, the Compaq is pro- 
grammable in BASIC and data are entered via an 83-key IBM- 
PC-!ikc keyboard. Unlike the PC. the Compaq comes with a 
standard parallel printer port. Its built-in 9-inch monochrome 
display handles both an 80-character by 25-line text mode and 
graphics. 

Altos 

The user looking for a more business-oriented system, should 
checkout the Altos 5- /5D. A micromainframe— the system box 
and drives, the terminal is a user opt ion— the 5-/50 is driven by 
an 8-bit Z80A CPU and comes with 192K of memory. 

Running under the industry-standard CP/M operating system, 
the 5- /5D comes with two standard 1 -megabyte 5 '/4-inch floppy 



O 
o 

-J 
o 

m 

s 



135 



6 

It 






m 


^^^H 


^^^1 


^^^m 




■ 


TABLE 1— $2500-S3000 

Manufacturers 


Model 


Price 


CPU 


Word Length 


Operating System 


Languages 


1 


Sord Computer 


M2i Mark 111 G 


$2530 


Z&bA 


g-blt 


Proprietary, CP/ 
M -compatible 


BASIC, Pascal, FORTRAN 




Franklin Computer Corp. 


Ace 1200 


$2544 


65C2Z80 


8-bit 


Apple DOS 3,3 
compatible, CP/M 


BASIC 




NEC Home Electronics 


PC-8800 


S2547 


Z80A-compatJble 


8-bll 


CPM 


BASIC 




IBM 


iBM-PC 


$2564 


8088 


ie-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FRTRN, basic; " 
MACRO assembler, Pascal 


1 


Heath Company 


HS-1 00-31 


$2594 


8085/80B8 


8/16-bit 


Proprietary 
ZDOS 


BASIC 




Texas Instruments 


Professional 
Computer 


$2595 


80S8 


1 6-bit 


MS-DOS, C?! 
M-86, UCSD p- 
System 


Macro Assembler, bAaiu, 
COBOL FORTRAN, Pascal 




Sharp Electronics 


PC-5000 


S2599 
(est.) 


8088 


16-bit 


N/A 






Canon USA 


ASiM 


$2620 


SiTfiS 


16-bit 


MS-DOS. CP/ 
M-86 


BASIC, COBOL 




Toshiba America 


TlOt) 


$2635 


zeoA 


8-bit 


CP/M 


BASIC 


.■w. 


LNW Research Corp. 


LNW80 Model 2 


$2645 


280A 


~B"-Bit 


CP/M, Proprie- 
tary 


BASIC 




Apple Computer 


Apple lie 


$2674 


6502A 


8-bit 


Apple DOS 3.3 


BASIC, PILOT Logo, Pas- 
cal, FORTRAN, COBOL 


i 


Sony 


$MC-7Cf" ■ 


$2675 


Z80A 


8-bit 


CP/M 


BASIC, CB-80, Pilot Plus 




Apple Computer 


Apple III 


$26SS 


"65025 


8-bit 


Apple SOS 


BASIC, Pascal 




Access Matrix Corp. 


Access 


S2695 


Z80A 


8-bit 


CP/M 


BASIC 




Apple Computer 

i 
1 


Apple III 


$2720 


6502B 


8-bit 


Apple SOS 


BASIC. Pascal 


4 


Heath Company 


HSA-1 20-31 


$2744 


8085/8088 


8/16-bit 


Proprietary 
ZDOS 


BASIC 




Canon USA 


ASlOO 


S2745 


8088 


16-bit 


MS-DOS, CP/ 
M-86 


BASIC, COBOL 




NEC Home Electronics 


PC-8800 


$2747 


Z80A-compati- 
ble.'a086 


8/16-bit 


N/A 


BASIC 




NEC Information Syst. 


APC 


$2748 


8086 


16-bit 


CP/"M-86, MS- 
DOS 


BASIC. COBOL, TOr- 
TRAN, PASCAL, Assam. 




Hewlett-Pacltard 


HP85A 


S2750 


Not announced 




N/A 


BASIC, assembler 




Hewlett-Packard 


" HPiso/isr 


S2775 


ZSOA 


3-bil 


N/A 


BASIC, assembler 




IBM 


"TBRTPC ■ ■ 


■ ■$2?8'3 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FORTRAN, 
BASIC, MACRO assembler, 
Pascal 




Kaypro Division 


Kaypro 10 


$2795 


280 


8-bit 


CP/M 


BASIC. Pascal, FORTRAN. 
Assembler. COBOL 




Texas Instruments 

i 

1 


Professional 
Computer 


$2820 


"^■088 


1 6-bit 


MS-DOS, CP/ 

M-ee, UCSD p- 

System 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 




Commodore Business 
Machines 


BX256-80 


$2890 


6509/8088 


8/1 6-bit 


Proprietary 


BASIC 




Zenith Data Systems 


ZF-100 


$2899 


8085/8088 


8/16-bit 


CP/M, ZDOS 
(proprietary) 


BASIC, COBOL FORTRAN 




IBM 


IBM-PC 


$2^04 


8088 


l6-bit 


PC-DUS (WK- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FORTRAN, 
BASIC, MACRO assembler, 
Pascal 


i 


Apple computer 


Apple III 


S2920 


6502B 


B-bit 


Apple sots 


BASIC, Pascal 




Sord Computer 


M23P 


$2930 


Z80A 


6-bit 


Proprietary, CP/ 
M-compatible 


BASIC, Pascal, FORTRAN 




Hewlett-Packard 


HP-85A 


$2945 


Not announced 




Proprietary 


BASIC, assembler 






_ 


__ 


^^ 


^_^ 




J 







V 

Memory /storage 


Keyboard 


I/O 


Display 


Comments l^^^f 




' 128K/2 330K5W'DS/DD 
drives 


59 keys, 20-key keypad, 
9 special (unction 


2 serial, 1 parallel 


12-inch green CRT 


2 DS/DD drives, CRT ^H 




126K.2 5 Vi- floppy disk 
drives 


72 keys, 12- key keypad 


1 serial, 1 parallel, game 
controller 


80 (40) X- 24/280 -> 192 
graphic capability 


Ace 1200 gains further stor- ^^^| 
age with second floppy disk ^H^f 

drive ^m 




64(C2 320KDS/OD5'/-." 
floppy drives 


81 keys, 5 multifuncliort, 
10-key keypad 


1 parallel, 1 serial 


14-inch monoctirome 
CHT/80 X 25 tejrt 


dual 320K DS/OD drives ■ 


r 

■ 


64K1SSDD1S0KSV4" 
floppy drive 


i>9 keys, 10 special tunc- 
tion, 20-key keypad 


1 parallel 


12-inch monochrome 
CRT/80 X 25 text 


1 drive added, display device w 
added - - JH 




192K/2 320K DS/DD 5 '/*' 
(ioppy drives 


60 keys, 14 function 
keys, 18-key keypad 


2 serial. 1 parallel 


monochrome capability 


2nd drive 9 


b 


64Ki320KDSDD5Vi" 
floppy drive 


97 keys. 17-key keypad, 
12 special function 


1 parallel 


12-inch monochrome CRT, 
720 X 300 res., 80 x 25 
display 


base system ^^^B 


t 


128K'128K bubble memory 
storage, cassette interface 


standard typewriter 




80-character x 8-l(ne liq- 
uid crystal display 


base system ^M 




Not announced.'2 640K 
DS,'DD 5 Vi" floppy drives 


standard 


1 serial 


monochrome display/SO x 
25 text mode 


serial port ^^H 


1 


64K<2 280KDS/DD 5 '// 
drives 


89 keys, 8 special tunc- 


1 parallel, 1 serial 


640 X 200 color display, 
80 X 25 in text mode 


color display ^M 




96K. 1 5 Vi" floppy disk 

drive 


73 keys, 11-key keypad 


1 parallel, 1 serial 


480 X 192 color ca- 
pability/62 X 16 text mode/ 
monochrome CRT 


first drive and monochrome ^^H 


i 


64K/1 5 W ftoppy drive 


63-key typewriter, 2 
programmable 


1 parallel, 1 serial, game 
controller 


12-inch monochrome 
CRT/80-column card/80 x 
24 text mode 


1 disk drive and controller ^^H 
added ^^^M 




64K'1 280K microfloppy 
drive 


72 keys, keypad, 9 
special function 


1 parallel, 1 serial 


12-inch green 80 x 25 text 


disk drive and CRT added. ^^^| 
video converter deleted ^^H 




i28K/1 l40KSS/DDSvi" 
floppy drive 


ei-key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 garrie control- 
ler 


280 X 192 and 560 x 192 
graphics capability'80 x 
24 text 


128K memory V 




64K'2 DS'DD floppy disk 

drives 


62 keys, 15 special func- 
tion, 15-key keypad 


2 serial. 1 parallel, 1 
lEEE-488 


7-inch monochrome {am- 
ber)/80 X 25 text mode 


drives upgraded to DS DD 'H 




128K/1 140KSS/DD5'/*" 
(ioppy drive 


61-key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler, 1 parallel 


280 X 192 and 560 x 192 
graphics capability/80 x 
24 text 


parallel port fl 




192K/2 320K DS/DD 5 Vi" 
floppy drives 


60 keys, 14 function 
keys, 18-key keypad 


2 serial, 1 parallel 


monochrome version 


2nd drive fl 




Not announced/2 640K 
DS/DD 5 W" floppy drives 


standard 


1 serial, 1 parallel 


monochrome display/80 x 
25 text mode 


parallel port ■ 




1 28 K' cassette in erlace; 
disk interface 


81 keys, 5 multifunction, 
10- key keypad 


1 parallel, 1 serial 


14-inch color CRT/640 x 
400 res./80 x 25 text 


optional 8086 card'memory j^^H 
uDoraded to 128K color CRT ^^H 




■fISeK/iMB 8-inch half- 
height DS/DD drive 


66 keys. 25-key keypad, 
23 function 


1 parallel, 1 serial 


80 X 25 monochrome 


basic system H 




l6K'tape cartridge 


58 keys. 20 -key keypad, 
8 special function 




built-in 5" CRT, 256 x 192 
graphics, 32 x 16 text 


portable system H 




S4K 


58 keys, 8 special func- 
tion 


2 serial. 1 ieEE-48B 


9" or 12"-monochrome 
CRT/80 X 25 text 


basic system, HPl 20 has 9" H 
display, 125 has 12" ■ 


h 


e4K,'1 aS/DD l8dK 5 V/ 
floppy drive 


59 iteys, 10 special func- 
tion, 20-key keypad 


1 parallel 


l2-inch high-res, color dis- 
play/80 X 25 text 


coicrdisplayadapter ^^^B 




64K/ 1 5 W DS/DD drive, 
10MB hard disk 


72 keys, 14-key keypad, 
20 programmable 


1 serial, 1 parallel 


9-tnch, monochrome 
CRT/80 X 25 text 


laasic system H 


w 


e4K.'i 320K DS.DD 5 Vi" 
floppy drive 


97 keys, 17-key keypad, 
12 special function 


1 parallel. 1 serial 


12-inch monochrome (JKI, 
720 X 300 res., 80 X 25 
display 


serial port ^^H 




256K'dua1 5 Vi" floppy disk 
drives 


standard, numeric 
keypad 


1 serial 


12-nch monochrome 
CRT/80 X 25 text mode 


dual drives ^ 




126K.1 320KDSDD5V1" 

drive 


77 keys, 18-key keypad, 
13 special function 


2 serial, 1 parallel 


composite video 
output 


basic system ^ 


i 


64K'1 320K DS/DD 5 W" 
floppy drive 


59 keys, 10 spectal func- 
tion, 20-key keypad 


1 parallel, 1 senai 


12-lnch monochtome 
CRT/80 X 25 text 


drive becomes DS/DD, serial 
port added 

m 




256Kf 140K SSDD 5.n" 
floppy drive 


61 -key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler, 1 parallel 


280 X 192and560x192 
graphics capability/80 x 
24 text 


parallel port added, memory ^M 
upgrades to 255K q 


i 


128K'2 290K microfloppy 
drives 


60 keys, 20-key keypad, 
9 special function 


2 seria), 1 parallel 


14-indi color monitor 


color monitor d 

m 

JO 




32K''tape cartridge 


58 keys, 20-key keypad, 
8 special function 




built-in 5" CRT 256 x 192 

graphics, 32 x 16 text 


16K RAM added S 


^ 137 





^^H TABLE 1— $2S0O-$3O0a (contlnu^ 

^^^ Maniifarrtiir(>fS Model 


Price 


CPU 


Word Lenath 


ODeratInq System Languages 


1 


Hewlett-Packard 


HP86A 


$2950 


Not announced 




UCSD p-Sys- 
tem. CPM 


BASIC, Pascal, FORTRAN, 




Docutel/Ollvetti Corp. 


M20 


$2965 


Z8001 


16-bit 


PCOS {Prof. 
Computer Op- 
erating Sy?,) 


BASIC 




Apple Computer 


Apple III 


$2969 


6502B 


6-blt 


Apple SOS 


BASIC, Pascal 


i 


Toshiba America 


T300 


$2975 


8083 


16-bit 


MS-DOS, CP/ 
M-86 


BASIC 




Basis Inc. 


Basis t08 


$2985 


Z80W6502 


6-bit 


CP/M, Apple 
DOS 3.3 


BASIC, Pascal, LOGO 




Altos Computer Systems 


5-1 5D 


$2990 


Z80A 


8-bit 


CP/M 


BASIC, COBOL, Pascal, 
FORTRAN, SOFTBOL 




Eagle Computer Inc. 


Eagle PC-i 


$2995 


8088 


16-bit 


CP(M-86, MS- 
DOS 




i 


Eagle Computer Inc. 


Eagle llE-3 


$2995 


Z80A 


8-bit 


CP.'M 


BASIC 




Vector Graphic Inc. 


Vector 4 


$2995 


Z80B. 8088 


8/16-bit 


HfA 


Not announced m 

1 


m 


Computer Devices Inc. 


DOT-3000A 


$2995 


8088 


16-bit 


MS-DOS 


BASIC, FORTRAN, COBOL, 

Pasffjl, aq.qpmWpr 




Hewlett-Packard 


H85B 


$2995 


Not announced 




Proprietary 


BASIC, assembler 




Sanyo 


MBC 1250 


$2995 


Z80A 


8-bi1 


CP.'M 


BASIC, Pascal, Fortran, 
Macro-80 




Sum 1 com Inc. 


System 330B 


$2995 


3088 


16-bit 


MS-DOS/CP/ 
M-B6 


FORTRAN, COBOL, Pas- 
cal. PASiC 




Wang Laboratories 


Professional 

Computer 


$2995 


8086 


16-bit 


MS-DOS, CP/M 

emulation 


BASIC, COBOL, FORTRAN, 
Pascal 




Hewlett-Packard 


HP87XM 


$2995 


Not announced 




N/A 


BASIC. Pascal, FORTRAN 




Intertec Data Systems 


Superbrain II 
QD 


- $2995 


Z80A 


8-bit 


CP.'M 


BASIC, FORTRAN 




^^Compaq Computer Corp. 


Compaq 


$2995 


B088 


16-bit 


Compaq DOS 
(Similar to IBM 
PC-nnS) 


BASIC 


i 


^^^1 Columbia Data Products 


1600-VP 


$2995 


8088 


16-btt 


MS-DOS 


Not announced 




^K Basis Inc. 


Basis 108 


$2995 


Z80A'6502 


8-bit 


CP.'M 3.0, Ap- 
ple DOS 3.3 


BASIC, Pascal, LOGO 




^^^■i Tele Video Systems Inc. 


TS 1603 


$2995 


8088 


16-&it 


CP/M-86, MS- 
DOS 


COBOL 




^V North Star Computers 


Horizon 


$2999 


Z80A 


8-t)(t 


TSS/C {Proprie- 
tary CP/M-like) 


Not announced 




1 """^'~ 


Advantage 


$2999 


Z80A 


8-bit 


CP/M, GDOS 


BASIC, FORTRAN, COBOL, 
Pascal 





disk drives. 

The 5'ISD has two serial ports and one paraliel port as 
standard. 

Vector Graphic 

Vector Graphic is a long-time veteran of the microcomputer 
marketplace. It was one of the first microcomputer manufactur- 
ers and remains in the thick of the fray with its Vector 4 system. 
It has 128K of user memory and, with the addition of a couple of 
drives, can become a powerful system. 

Driven by dual Z80B and 8088 CPU's, the system has a 
typewriter-style keyboard with 91 keys, 15 spec iai-funct ton 
keys and an 18-key numeric pad. Us l2-iuch monochrome 
display delivers an 80-column by 24-line display or 640- by 
312-dot graphics. 



'to 
g 
z 
o 
cc 

UJ 

_I 
LLI 

Q 

Q A newcomer to the microcomputer market, Basis Inc. sells 

£ the Basis lOS system, that takes a different tack. A dual- 



Basis 



processor small-computer system, it does not use i^OA's or a 
Z80/80S6(8) combination. Instead the company has opted to 
make this single-user system compatible with CP/M and its 
many programs and Apple's disk-operating system and the 
many programs that run under it. Driven by a Z80A 8-bit 
microprocessor and a 6502. another 8-bit CPU, the Basis 108 
has 128K of user memory. 

The 108 comes with two S'A-inch minifloppy disk drives. 
Input/output is provided by serial and paralle! ports. 

With RGB color outputs available, the Basis 108 can generate 
up to 280- by 192-dot video resolution or an 80-character by 
25-line text display. This system upgrades once in this price 
category by adding CP/M 3.0. 

Zenith 

The parent of the Heath Co., who offers kit versions of the 
Z-WO series. Zenith has a ready-to-go version of the same 
system. The ZF-100 outlined here is the low-profile version of 
this system. 



138 







Memory /storage 


Keyboard 


I/O 


Display 


Commertts ^^^^H 




64K/1 270K 5 'A" drive 


59 keys. 20- key keypad, 
14 special function 


1 paralle! 


ff* monochrome CRP80 x 
25lext 


5 V<" drive added ^H 




128K1360K 5 W floppy 
drive 


72 keys. 16-key keypad 


1 serial, 1 parallel 


12-inch tiigh-tes. mono- 
chrome,'80 x 25 text mode 


one-drive added ^H 




128K,1140K 5 %" floppy 
drive 


61 -key typewriter. 13-key 
keypad. 2 program- 
mable 


1 serial, 2 game control- 
ler. 1 parallel 


12-incti CRT/280 x 192 
and 560 x 192 grapfiics 


r.KT 3rii1ori in 1?8K Apple III ^| 


k 


192K<2 640KDS/DD5Vi" 
drives 


67 keys, 18 special 
funct, 10 edit. 18-key 
kevpad 


1 parallel, 1 serial 




2nd drive adcted ^| 




l28Kffi 5 '/v floppy drives 


58 keys. 15 program- 
mable, fiomeric kevoad 


1 parallel. 1 serial 


RGB and composite/280 


basic system ^H 




192K2 1MBDS'DD5W 
floppy drives 


N/A 


4 serial, 1 parallel 


N/A 


micro- mainframe, can drive 1 ^H 
lo 3 terminels ^H 


1 


128K'1 320K DS/DD 5 W 
floppy drive 


105 keys 


2 serial, 1 parallel 


12-inch high-res. mono- 
chrome/720 X 352 
capability/80 x 25 text 
mndn 


memory increases lo 16K, ^^^H 
monitor added j^^^J 




64K'2 780K DS/DD 5 Vi" 
floppy drives 


75 keys 


2 serial, 2 parallel 


12-inch monochrome/80 x 
25 text mode 


DS DD 96-track disk drives ^| 


1 


12eK 


91 keys, 15 special func- 
tion, 18-key keypad 


2 serial, 1 parallel 


12- inch monochrome 
CRT/80 >c 24 text/640 x 
312qraDhics 


basic system ^^^^ 




64K'1 3 W 280K micro 
floppy drive 


59 keys, 10 function 
keys, 18-kev keypad 




80 X 24 text 


basic system ^H 




aZK/tape drive/electronic 
(BAM) disk 


58 keys, 20-kBy keypad. 
8 special function 




built-in 5- CRT. 256 x 132 
flraphtcs, 32 x 16 tejrt 


electronic RAM disk. 32K ^^^^| 
memorv ^^^H 




54K;2 640K slim line DS' 
DD fioppy drives 


50 keys, 15 program- 
mabie, 18-key keypad 


1 parallel, 1 serial 


12-inch monochrome/80 x 
25 te>tt'640 y~ 400 graph- 

ir.K 


2nd high-density slim line ^H 

^1 




128K/2SS/DO160K5W 
floppy drives 


95 keys, 8 special func- 
tion, 10-key keypad 


1 serial, 1 parallel 


monochrome CRT 


2 SS/OD disks, CRT ^| 




i2SKl aeOK DS'DD 5 '//■ 
floppy drive 


101 keys, 16 program- 
mable, 18-key keypad 


1 parallel, 1 serial 




basic system ^H 




i2eK 


59 keys, 20-key keypad. 
14 special function 


multipurpose port 


8" monochname CRT/80 x 
25 text 


basic system ^H 



64K'2 750K 5 VJ" floppy 
drives 

drive 



62 keys, 18 -key keypad 2 serial 



12-inch monochrome/80 x drives upgraded to 750K 
24 text mode 



83 keys, 10- key keypad, 
10 special function 



1 parallel, opt. serial 



9-lnch (monochrome, 80 x basic system 
25 text 





123K2 320K 5 Vj" floppy 
disk drives 


83 keys, 10 special func- 
tion, keypad 


1 serial, 1 parallel 


9-inch monochrome 
CRT/80 X 25 text 


basic system 




12eKy2 5 %' (loppy drives 


58 keys, 15 program- 
mable, numeric keypad 


1 parallel, 1 serial 


RGB and composite'280 
X 192 res./80 x 25 text 


CP/M 3.0 




1:^BK2 halt-height 1MB 

floppy drives 


12 keys, 16 program- 
mable, 16-key keypad 


2 serial, 1 serial RS-422 
port 


14-inch monochrome/80 ;•■ 
2,5 text 


16-bit system 


L 

1 


64K/2 360KDS/DD5W 
floppy drives 


"■■|Sl/A 


2 serial, 1 parallel 


N/A 


micromainframe system 


■ S4K/2 SeOK'DS/DD 5 v." 
floppy drives 


49 keys, 14-key keypad, 
15 function keys 


1 parallel, 1 serial 


12-inch monochrome 
CRT/640 X 240 graphics 
res./80 x 24 text mode 


all-in-one microcomputer vuith | 
dual floppy disks | 



Driven by an 8085 8-bit processor and an 8088 16-bit pro- 
cessor, this system has 128K of standard user memory. 

Another of the IBM-w^orkaUkes on the market, the ZF-100 
operates under its own proprietary operating system and CP/M. 

With one standard double-sided, double-density 320K mini- 
floppy-disk drive available for storage, the system is almost 
fully configured right from the box. 

Programmable in BASIC, COBOL and Fortran, this and 
other data are entered via a typewriter-style keyboard with 77 
keys. It also features an 18-key numeric keypad and 13 special- 
function keys. Input/output is through two .serial ports and one 
parallel port. 

Computer Devices 

Another of the many IBM -compatible systems now on the 
market, the Computer Devices DOT-3000A, is a transportable 
system. This new manufacturer is using the same CPU found in 
the IBM, the 16-bit 8088 to drive the DOT. Its 64K of user 
memory is the minimum needed for efficient operation of the 



many programs available for MS-DOS, the DOTs operating 
system. 

The DOT can use several high-level programming languages 
and this data are input through a 59-key keyboard. Since it is a 
transportable, the DOT has a built-in display, with an 80- 
character by 24-line text mode. 

Columbia Data Products 

Although this manufacturer is not widely known outside the 
computer industry, it also has a microcomputer offering, the 
I600-VP, another IBM-compatible transportable system. 

Driven by the 16-bit 8088 CPU, the 1600-VP has 128K of 
standard user memory. It is compatible with MS-DOS and runs 
under it. 

The 160Q-VP comes with two 320K double-sided, double- 
density minifloppy disk drives for storage. The keyboard is 
patterned after the IBM's 83-key unit. However, unlike the 
IBM, the 1600-VP includes standard serial and parallel pons for 
interfacing with a variety of peripherals. The 9-inch 



O 
o 

3 

CD 

m 
3 



S 



139.M 



moncKhrome screen unit has an 80-character by 25-line text 
display. 

Sord 

From Sord/Mitsui comes the M23 Mark III G, another of the 
many Z80A-based systems. A fully configured system right out 
of the box, it comes with 1 28K of user memory and a basic set of 
applications software, something a growing number of systems 
are doing. 

With two standard double-sided, double-density 330K mini- 
floppy disk drives, this system is flexible. Not only does it run 
under its own proprietary operating system, it is also CP/M 
compatible and is programmable in BASIC, Pascal, and For- 
tran. 

Basically the M23 system, it is actually an upgraded version 
whh the drives and 1 2-inch green monochrome display device 
included. User input is via a keyboard containing 59 keys, a 
20-key numeric pad and nine special-function keys. Input/ 
output is handled through two serial ports and a parallel port. 

The basic M23 upgrades in this price category by adding a 
high-resoludon color video monitor. 

Texas instruments 

A new personal computer joins the array from this semicon- 
ductor giant. Its the Projfessional Computer, another of the many 
IBM-workalikes. Driven by a 16-bit 8088 microprocessor, the 
same one used by IBM, this system has 64K of RAM. 

Its standard 320K double-sided, double-density disk provides 
basic storage capability, although the addition of a second disk 
drive increases system flexibility, it runs under MS-DOS, but 
CP/M-86 and the UCSD p-System are also available. 

Output is through a standard parallel port for a printer. The 
standard display is a 12-inch monochrome screen, with 720- by 
300-dot resolution and an 80-character by 25-line text display. It 
upgrades once in this price category by adding a serial port. 

Sharp 

A new model joins the Sharp lineup in this price category, the 
lap computer PC-5000. Driven by a 16-bit 8088 microproces- 
sor, the PC-5000 has a rather unusual feature; it relies on 
magnetic bubble-memory storage in placeof a disk drive. Mag- 
nedc bubble memory is nonvolatile user memory that retains its 
contents even when the power is shut down. This type of 
memory can effectively eliminate the need for disks for mass 
storage. The unit comes with 128K of RAM. With a standard 
keyboard, the PC-5000 can be programmed in BASIC. Its 
screen is an 80-character by 8-line liquid-crystal display. 

NEC 

A new small -computer joins the NEC lineup here, the APC, 
another IBM workalike. Instead of using an 8088. 16-bit CPU, 
the APC takes advantage of its brother the 8086, that recognizes 
the same instruction set. It is equipped with 1 28K u.ser memory 
and a 1-MB 8-inch half-height double-sided, double-density 
disk drive. It runs under MS-DOS or CP/M-86. 

It is progranmiable in several high-level languages input via a 
typewriter-style keyboard with 66 keys. Twenty-three function 
keys and a 25-kcy numeric pad aid functionality. Input/output is 
through standard parallel and serial ports. Video output is 80- 
characters by 25-lines text on a monochrome display. 

The PC -SfiOO— -still only a CP/M-compatible machine at this 
point — upgrades by adding dual 320K double-sided, double- 
density minifloppy disk drives. Its second upgrade makes it a 

yj true 1 6-bit machine with the addition of the optional 1 6-bit card. 

9 This gives the user the advantage of MS-DOS capability, 

ix Hewlett-Packard 

o Two new systems join the Hewlett/Packard lineup in this 

fjJ price category, the J 20/ 1 25 and the HP87XM. In this price 

(^ category, the new HP 1 20/ 125 system is in its most basic con- 

Q figuration. Driven by dual Z80A CPU's, the system has 64K of 

S user memory. But no disk storage is available at this price, 

,140 



Programmable in BASIC and assembler, this and other data are 
input via a typewriter-style keyboard with 58 keys. The key- 
board includes 8 special- function keys and other soft or pro- 
grammable keys. Input/output is aided by two standard serial 
ports as well as an lEEE-488 port, for a variety of test and 
measurement, and other devices. The standard display on the 
HP} 20 is a 9-inch monochrome display, while the HP 125 has a 
12-inch monochrome display. 

The HP87XM is a very basic machine at this point. Although 
it has 1 28K of user memory and is programmable in BASIC, 
Fortran, Pascal, and COBOL, you will need disk drives to take 
fvill advantage of them. 

The basic configuration of this system includes a typewriter- 
style keyboard with 58 keys, a 20-key numeric keypad and eight 
special-function keys. A multipurpose port facilitates input/ 
output, A built-in 8-inch monochrome display rounds out the 
basic unit. 

Other H-P small-computer systems also upgrade or are in- 
troduced in this price segment. There's the portable HP85A. It is 
not only introduced, but also has its RAM expanded to 32K. 
This system includes I95K of built-in tape storage and a built-in 
thermal printer and a built-in 5-inch monochrome CRT, It also 
includes 2 serial ports and an IEEE-488 port. 

The HP85B enhances the HPS5A system by including an 
electronic (RAM) disk for speed and storage and greater user 
memory. Meanwhile, the HP86A system debuts in this category 
and, while it has many of die attributes of the HPS5 system, it 
also includes a standard minifloppy disk drive for storage. 

North Star 

North Star Computers has two systems that debut in this price 
category, the Horizon and the Advantage. A micromainframe, 
the Horizon is driven by an 8-bit Z80A CPU. The basis of a 
multi-user system, it includes 64K of u.ser memory and two 
standard double-sided, double-density 360K minifloppy disk 
drives for storage . With access to a proprietary operating sys- 
tem, there are many applications for this computer system, 
which includes two serial ports and one parallel for inpui/output. 
The terminal is a user option. 

The Advantage is an alt-in-one microcomputer system that 
includes dual floppy-disk storage. Also driven by a Z80A, it has 
64K of user memory and runs CP/M. Programmable in BASIC, 
Fortran, COBOL, and Pa,scal . this and other data are entered via 
a typewriter-style keyboard with 49 keys. It also includes a 
14-key numeric pad and 15 function keys. Input/output is aided 
with standard serial and parallel pons. The built-in 12-inch 
monochrome screen displays 640 by 240 graphics or an 80- 
character by 24-line text mode. 



1 




THE APC from NEC Is an IBM workalike. 



Many IBM warkalskes have appeared on the market in the 
recent past from many manufacturers. 

TeleVideo is no exception with its 8088-driven 7"5 I60S that 
runs CP/M or MS-DOS. It offers 128K RAM and two half- 
height one-megabyte double-sided, double-density floppy-disk 
drives. 

With two standard serial ports and an RS-422 serial pon. a 
user has several peripheral interface options for input/output. 
The TS 1603 is programmable in COBOL, so it's readily appar- 
ent this small-computer is aimed at the business market. 

Sanyo 

The MBC 1250 expands in this category with the addition of a 
second high-density slira-line floppy-disk drive. This type of 
drive shows an important trend in the small -computer industry, 
miniaturization. 

Unfortunately it also shows another important trend: compu- 
ter manufacturers often find it hard to agree on standards. There 
are several computers from different companies who offer 
microfloppy-disk drives — each with its own "standard". 

Kaypro 

Kaypro adds to its line of Z80-based, 8-bit transportable 
microcomputer systems with the Kaypro 10. Like the other 
members of this manufacturer's line, the Kaypro 10 comes as a 
full-featured unit right out of the box. However, it features not 
only a double-sided, double-density SW floppy-disk drive, but 
also a ten-megabyte haid-disk drive. 

Intertec 

Intertec's new offering in this price category is the Superbrain 
I1~QD. Like the Superbrain 11— Jr. , this small-computer sys- 
tem is driven by dual Z80A microprocessors; one handles the 
actual data processing, while the other microprocessor handles 
the housekeeping. 

The key change in this system, and the one that raises it above 
the Superbrain H^Jr. is the use of dual 750K 5'/i-inch miniflop- 
py disk drives for storage. It has the same specifications as the 
Junior and is an all-in-one unit. 

Sumicom 

The System 330B expands in this price category with the 
addition of two 1 60K single-sided, double-density minifloppy- 
disk drives. This turns it into a fully configured microcomputer 
system. 

Apple 

Two systems upgrade in this price category, the Apple fie and 
the Apple HI. The Apple He upgrades once with the addition of a 
minifloppy disk drive and disk -drive controller circuitry. 

The business-oriented Apple III upgrades four times. Its first 
upgrade is its increase in user memory to 128K as standard, 
while its second upgrade gives it output capability by adding a 
parallel port for a printer. The third upgrade brings the user 
memory to 25 6K, and also adds a parallel port for increased 
output capability, while die fourth upgrade to the 128K version 
adds a standard video-display device. 

IBM 

The IBM Personal Computer becomes a far more powerful 
tool with its first upgrade, tlie addition of a minifloppy disk drive 
for storage. This upgrade also adds the high-resolution display 
that enhances serious computing. Its second upgrade adds the 
color display device to the one-disk drive version of the IBM- 
PC. In its third upgrade, the PC gains further input/output 
capabilities with the addition of a serial port and die disk drive 
becomes even more versatile as its mass-storage capabilities 
increase to 320K. 

Eagle Computer 
Bodi Eagle models, the PC-1 and IIE-3, upgrade here. The 




THE BASIS tOB from Basts, Inc. Is » dual microprocessor (ZB0A/65Q2) 
system that runs CP/M and an Apple-compatible DOS. 



PC gains more user memory and a standard video-display de- 
vice, in addition to its complete complement of bundled (in- 
cluded) software. The storage capacity of the Eagle IIE-3 in- 
creases with the addition of 96-track double-sided, double- 
density minifloppy disks. 

Toshiba 

The TWO system can handle high-resolution color graphics in 
this price spectrum by adding a 640- by 200-dot resolution color 
video display device. 

The T300 system gains greater mass-storage capability in this 
price category with the addition of a second minifloppy-disk 
drive to its configuration. 

Canon 

This manufacturer's offering, the AS 1 00, has two upgrades. 
The first adds a serial port for greater input/output capability. 
The second upgrade adds a parallel port. 

Heath 

At this time, second disk drives for greater mass-storage 
capabilities are added to the low-profile Heath HS- 100-31 kit 
and the HS-I20-3! kit. 

Franklin 

A second disk drive is added to the Franklin Ace 1200. As you 
might expect, that increases the mass-storage capabilities of this 
unit. 

Sony 

The SM.C-70 becomes even more fully configured as a disk 
drive is added for mass storage and a standard video-display 
device is also added. 

Con^modore 

The CBX256-80 becomes fully configured with the addition 
of two disk drives. 

Access Matrix 

With the addition of higher-density disks, the mass-storage 
capabilities of the Access transportable increase dramatically. 

LNW 



In this price category's configuration, the LNW80 Model 2 3) 
gains its first disk drive for storage. Further, the user gains a S 
standard video-display device. H-E 8 

141. 



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334/G76B $35,95 

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E33628 



O 



CO 



145 



b: 



•V- 



Your own telephone can become a 24-hour-a-dav lifeguard! 

The SENSAPHONE Transforms Your 

Telephone into a Full-Time luionitor, 

Whether You're Home Or Not. 

TALKS TO YOU — 
IN CLEAR ENGLISH 

Your Sensaphone uses a standard 
built-in modular telephone connector. 
Instead of plugging your phone into 
the wall, plug it into the Sensaphone. 
then in turn plug the Sensaphone into 
the wall. Total time: 10 seconds. 

Once installed, the Sensaphone 
does its job and reports its findings in 
clear English. For example — 

• If you aren't home and a problem 
occurs, it calls anyone you've 
designated and reports that pro- 
blem, in English, then arranges 
to quit calling once the message 
is acknowledged. 

• If you want to know what time it 
is. your Sensaphone tells you — 
in English. 

• If you want to know the current 
temperature in the room, your 
Sensaphone tells you — in English. 

• If the backup batteries (which 
hold the "memory" if you have 
a power failure) are low, your 
Sensaphone tells you so — in 
English. 

• If you call in from the outside to 
learn how things are. your Sensa- 
phone reports on all conditions — 
in English. 

YOU MAY NOT BELIEVE IT AS YOU 
READ THIS. BUT YOU'LL BELIEVE 
WHEN YOU PLUG IT IN. YOUR 
MONEY BACK IF WERE EXAG- 
GERATING. 




i 








— 


_^ 




< 


] 




^^ -.^^^^^ 


J^ 



Sftises and reports 
problems in the home 



Calls for help so food 
won't spoil. 



Monitor your home from 
any phone in the world. 



CO 

g 

z 
o 
cr 

\3 

_i 

UJ 

6 
o 
< 

146 



Read This Section 
Carefully: 

Your SENSAPHONE Will 
DO All This — 

1. You can call in from any phone 
in the world. SENSAPHONE will 
report every monitored condition 
to you. 

2. You can listen to room sounds 
in your home or office through 
the powerful built-in microphone, 
from any phone in the world. 

3. It reports specific unusual sounds, 
such as a smoke alarm's ringing 
or buzzing, or a burglar alarm. 

4. It monitors and reports on any 
three other conditions of your 
choice (basement water level: 
door or window opening; water 
heater: appliance on). 



3. (Get this!) If one of the pre- 
programmed problems occurs, 
it automatically calls you or 
anyone you designate, then states 
in English what the problem is. 
If the first person called doesn't 
answer. SENSAPHONE calls up 
to four numbers in rotation until 
someone answers and acknow- 
ledges receiving the call. 

6. It monitors your household or 

office electricity, so if your 
refrigerator or lights go out. 
it reports the problem. 

7. If room temperature rises above 
the number you preset or falls 
below it, Sensaphone tells you so. 

8. An automatic dialer calls any of 
eight numbers with one-button 
dialing. 

9. It tells you the correct time, in 
English, including whether the 
time is a.m. or p.m. 

10. It tells you the exact room tem- 
perature, on request. 



The Sensaphone $249.95 
two for $229.95 each 

A FANTASTIC GIFT IDEA! 

add 13,50 per total order for shipping 



WE ABSOLUTELY GUARANTEE! 

Plug your home or office phone (or both) into 
the Sensaphone. Use it for up to 30 days. !f for 
any reason you decide you don't want to keep 
It. return it for a 100% refund. 



For fast delivery on credit card orders, 

call toll-free 24 hours a day, 

7 days a week: 

1-800-443-0100 

Ask for Extension 1 1 1 

Or send check or money order. 

Please add $3,50 per total order 

for shipping. 

The Sensaphone is another electronic 
marvel from 

n€W HORIZOMS 

Dept. RIO . 5-31 Fiftieth Avenue 
Long Island City. NY 1 1 1 1 



01 






)UampubEP 

f$3000-$3500 



Sixteen-bit machines begin 

to take a greater share of 

the market. 



^SOOO to ^3500 



MARC STERN 



DURING* THE LAST YEAR, THE BIGGEST TREND IN THE 

microcomputer industry has been the swing to the 16-bit ma- 
chine. And, it's no mystery why it has happened. With the 
arrival of IBM in the small-computer market, more and more of 
the computer industry has jumped aboard the bandwagon, hop- 
ing to carve out its niche. 

For the person thinking of buying such a system there are a 
couple of benefits. The first is the ability of the 16-bit 
microcomputer to handle much larger amounts of memory. This 
means that applications programs can become more com- 
prehensive and more powerful. 

The second reason is thai IBM is bringing some stability and 
order to this market. Just as CP/M caught on in the 8-hit market 
and assured some stability and rationalization and a degree of 
standardization, so has IBM and the operating system it has 
chosen — MS-DOS — brought some order to the market. 

This means that the buyer will have an easier time deciding 
which type of machine is the best to buy, since the base of 
MS-IX)S-compatible software is rapidly growing. 

Yes, there are a great many machines that are IBM- 
workalikes and the search for the right one can be confusing. 
However, if the buyer opts for one using an 8086(88) CPU , there 
is a measure of order. 

Don't think, though, the 8-bit CPU is dead. There are still 
many fine machines on the market using this type of CPU, In 
fact, this type of CPU is likely to be around for several years to 
come in single-user machines and you'll still find a wide variety 
of those machines available ii5 our listings. 

So let's begin our look at the new machines making their 
debuts here and move on to seeing how other offerings have 
upgraded, 

Epson 

Although Epson has long been known for its smalJ-computer 



peripheral equipment, it has also entered the microcomputer 
market with two offerings of its own, the HX-20 and the easy-to- 
use QX-IO. The HX-20 is a low-cost lap compuier, while the 
QX-W is a full-featured small system 

Right from the box, the user has access to the power of an 
8-bit Z80A microprocessor and 64K of RAM. This amount of 
memory is more than enough to handle all the user-oriented 
software available for this system. This system features a plain 
language user-interface and a one-key function access. 

Fully configured, this sy.stem features the CP/M operating 
system and two double- sided, double-density 5 '/4-inch mini- 
floppy -disk drives. 

Data are entered via a typewriter-style keyboard widi 63 keys. 
This keyboard includes 21 special-function keys. With the push 
of one of these buttons, a user is able to access fimctions without 
the necesssity of entering a series of ■'computer-like" com- 
mands. 

Output is via a standard 12-inch monochrome display, cap- 
able of 640- by 400-dot graphics resolution or an 80-characterby 
25-line text display. Input/output is provided by standard serial 
and parallel ports. 

Hitachi 

Better known for its consumer electronics products, Hitachi 
also has an offering that makes its debut in this price range, the 
! 6-bit AfS£ 16000 system. .Another of the IBM-workalikes, it is 
driven by an 8088 microprocessor, the same one used by IBM in 
its Personal Computer. 

With 128K of user memory, this sy.stem is easily able to 
handle many functions a user may care to undertake. It uses 
MS-DOS and comes with two SVi-inch minifloppy-disk drives 
for storage. 

Although a firm price for this system hadn't been established 
at press time, it's likely to be about $3000 and for this amount 



I 





W TABLE 1— S3000-S3500 
1 Manufacturer 


Model 


Price 


CPU 


Word Length 


Operating System 


Languages 




B Epson America 


QX-10 


S3000 
(est.) 


zaoA 


S-bit 


CP/M 


Not announced """Wt^M 


■ 


^^ Hewlett-Packard 


HP86B 


$3000 
(est.) 


Not announced 




UCSD p-Sys- 
tem, CP/M 


BASIC. Pascal, FORTRAN 




^^ hitactil Sales Corp. 


MBE 16000 


i3000 
(esU 


8088 


IS^btt 


MS-OOS 


BASII5. FORTftAN. COBOL. 
Rascal, assemb. 




^^» Zerrith Data Systems 


Z-120 


S3038 


8085.-8086 


8'16-bit 


CP M, ZDOS 
(proprietary) 


BASIC, COBOL, FORTRAN 




H^ LNW Research Corp. 


U4W80 Model 2 


$3045 


Z80A 


8-bit 


CP/M, Proprie- 
tary 


BASIC 




^1 Apple Computer 


Apple lie 


$3069 


6502A 


8-bit 


Apple DOS 3.3 


BASIC, PILOT Logo, Ras- 
cal, FORTRAN, COBOL 




^^^ Sord Computer ^""=''"^^ 


M23 Mark III C 


$3075 


Z80A T- - 'T-^-gagjt— . 


Proprietary, CP' 
M-compalible 


BASIC, Pascal, FORTRAN 




HUg Toshiba America 


T300 


$3090 


8088 


16-bit 


MS-DOS, CP. 
M-86 


BASIC 


1 


H NEC Home Electronics 


PC-8800 


$3097 


Z80A-compati- 
ble/8086 


8/1 6-bit 


CP/M, CP/ 
M-86, MS-DOS 


BASIC 


i 


H Sony 


SMC-70 


S3125 


Z80A 


8-bit 


CPM 


BASIC, CB-80. Pilot Pius 




■ ^ tBM 


IBM-PC 


$3148 


8088 


16-bil 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
Svstem 


COBOL, FORTRAN, 
BASIC. MACRO assembler. 
Rascal 


■ 


B Apple Computer 


Appie III 


S3169 


6502B 


8-bit 


Apple SOS 


BASIC, Pascal 




■ Dynalogic Info-Tech Corp. 


Hyperion 


$3195 


8088 


16-bit 




-BASIC. COBOL. FORTRANf 
Pasca! 


1 


■ Sony 


SMC-70 


S3195 


Z80A 


8-bit 


CPM 


BASIC, CB-80, Pilot Plus 




H Toshiba America 


T300 


$3195 


8088 


16-bit 


MS-DOS, CP/ 
M-86 


BASIC 


V 



Canon USA 



ASlOO 



$3195 8088 



16-bit 



Radio Shack 



TRS-80 Model 12 $3199 ZSOA" 



8-hit 



MS-DOS, CP, 

M-86 

TRSDOS' 



BASIC, COBOL 
"BASIC" 



f 

■i 


Casio, inc. 

1 


FX-9000P 


$3214 


Z80A-compatible 


8-bit 


Not announced 


BASIC 


Athena Computer 


Athenal"^*" 


^©250*™'NSC-8OO (low- 
power Z80) 


8-bit 


CP/M 


Pascal jjuja 


Commodore Business 
Mach. 


CBM 8032 


$3290 


6502 


8-bit 


Proprietary 


BASIC 


Hewiott-Packard 


HP86A 


$3290 


Not announced 




UCSD p-Sys- 
tem. CP/M 


BASIC, Pascal. FORTRAN 


, Computer Devices inc. 


DOT-3000X 


S3295 


8088 


16-bit 


MS-DOS 


BASIC, FORTRAN, COBOL. 
Pascal, assembler 


'Sanyo 


MBC4O00 


S3295 


8086 


16-bit 


CPIM-m^-"^^--'^ 


BASIC, assembler •" 


Xerox Corp. 


820-11 


$3295 


ZSOA 


3-bit 


CPM 


Not announced 


NEC Home Electronics 


PC-8800 


S3296 


zeOA-compatible 


8-bi1 


CP/M 


BASIC ••'MMB 


IMS international 


5000SX 


S3300 


Z80 


8-bit 


CPM, MPM 
TurboDOS 


BASIC, COBOL. FORTRAN, 
Pascal 


Canon USA 


AS100 


$3320 


8088 


16-bit 


MS-DOS. CP/ 

M-86 


BASIC. COBOL 


Hewlett-Packard 


HP-85A 


S3340 


Not announced 




NA 


BASIC, assembler 


NEC information Syst 


APC 


$3346 


8086 


16-bit 


CP/M-B6, MS- 
DOS 


BASIC, COBOL. FOR- 
TRAN, PASCAL Assam, 


Texas Instruments 


Professions 
Computer 


li $3370 


8088 


16-bit 


MS-DOS, CP 
M-86, UCSD p- 
Svstem 


Macro Assembier, BASIC, 
COBOL, FORTRAN, Pascal 



< 
a: 



Columbia Data Products 1600- 



148 



L 




16-btt 



MS-DOS 



BASIC, assembler 








Memory/Storage 


Keyboard 


TO 


Display 


Comments l 


t 


64tC2 340K DS/DD 5 V*- 
floppy drives 


63 keys, 21 special func- 
tion, 1 8-key keypad 


1 serial, 1 parallel 


12-indi monochrome 
CRP80 X 25 text 
mode/640 x 400 graphics 
res. 


basic system 

\ 




128K/'1 3.5-inch 270K drive 


59 iteys, 20-key keypad, 
14 special function 


1 parallel 


12™ monochrome CRT/90 
X 20 text 


memory expands to ISBK 
anrj microdnve added 




128K/2 5 '/«-inch floppy 
drives 


61 keys, 8 special func- 
lion, 18-kev keypad 


1 sens), 1 parallel 


60 J< 25 text'640 x 400 
qraphics capability 


IBM-workatIke 




128K'1 320K DS.DD 5 Vi" 
drive 


77 keys, 18 -key keypad, 
1 3 special function 


2 serial, 1 parallel 


80 X 25 text green mono- 
chrome CRT 


green monochrome display 
added 




96K/2 5 "A" SS floppy disk 
drives 


73 keys, 11-key keypad 


1 parallel, \ serial 


480 X 192 color ca- 
pability/62 X 16 text mode/ 
monochrome CRT 


2nd drive 


^ 


641^2 %v* minifloppy 
disk-drives 


63-key typewriter, 2 
programnyable 


t parallel, 1 serial, game 
controller 


12-inch monochrome 
CRT/80-column card. 80 x 
24 text mode 


2na dnve j 




12aK/2 330K 5 W DS/DD 
drives 


59 keys. 20-key keypad, 
9 special function 


2 serial, 1 parallel 


14-inch color CRT 


color display 




192K.2 640KDS.DD5y4" 


67 keys, 18 special 


1 parallel, 1 serial 


80 X 2S monochrome 


2nd dnve 



dnves 



128K/2 320K DS/DD 5 W" 
floppy drives 



fund, 10 edit. 18-key 
keypad 



81 keys, 5 multifunction, 
10-kev keypad 



T parallel, 1 serial 



■t4-inch monochrome 
CRT/BO X 25 text 



dual 320K USIDU drives aod- 
ed 



64K2 280K 3.5" microflop- 

PV drives 

64Kn 320K DS/DD 5 ■/*" 
floppy drive 



72 keys, keypad, 9 
special lunction 
59 keys, 10 special func- 
lion, 20-key keypad 



1 parallel, 1 serial 



1 paralle!, 1 serial 



12-inch green CRT'80 x 

25 

12-inch high -res. color dis- 
play/80 X 25 text 



2nd dnve 



color, senai porranoecF 



I 



12-inch CRT/280 X 
192'560 X 192 graphics 
cap./80 K 24 text 



P 



256K/1 140K SS/DD 5 'A" 
floppy drive 



61 -key typewriter, 13-key 
keypad, 2 program- 
mable 



1 serial, 2 game control- 
ler, 1 parallel 



CHj auumi io 256K Apple III 



256K/1 320K DS/DD 5 V*" 
floppy drive 



84 keys, 10 (unction 
keys. 10-key keypad 



1 serial, 1 parallel 7-inch amt>er monochrome transportable IBM-compatible 

CRT/80 X 25 text 
mode/640 x 250 graphics 



64K 1 260K 3.5" microflop- 

PV drive 

192K/2 640K DS/DD 5%" 
drive 



72 keys, keypad, 9 
special function 



67 keys, 18 special 
(unci., 10 edit, 18-key 
keypad 



1 parallel, 1 serial 
1 parallel, 1 serial 



12-inch RGB high-res. 
color CRT 

640 X 200 color display 
80 X 25 in te>it mode 



color CRT subsiiuteil 



cotor display 



I 

r 



640 X 400 color graphics 

capability 

12-inch monochrome/80 

(40) X 24 text mode 



color version with high-res. 

graphics capability 
basic system 



Not announced/2 640K 
DS.DD 5 v.=" floppy drives 
80K/1 1.25MB 8' DS/DD 
floppy drive 



standard 



82 keys, 6 program- 
mable keys. 19-key 
keypad 



2 serial, 1 parallel 



32K/dual floppy disk drive 67 iteys, 16-key keypad 



2 serial, 1 parallel 



5.5- inch monochrome 
CRT, 32 X 16, 256 x 128 

graphics 



28K RAM, plus disk storage 
added 



80-character x 4-tine liq- 
uld crystal display/extemal 
CRT connector 



lap computer 



68K/126K of RAM-disk 
slorage/1 DD 5 VI" floppy 
included 



standard 



\ 



32K'duat SW' floppy disk 
drivers 



standard, numeric 
keypad 



1 serial 



integral display 



dual drives added 



64K/1 3.5-lnch micro 270K 
drive 



59 keys, 20-key keypad, 1 parallel 
14 special function 



9" monochrome CRT, 80 
X 25 text 



monochrome monitor 
(built-in)'80 >i 24 text 



-Inch drive addt 
■■■4 added 



128Kj1 3.5" 280K micro 

floppy drive 



59 keys, 10 function 
keys. 18-kev keypad 



basic system 



i28Kj'1 640K Slim line 5 W 
DS/DD floppy drive 



60 keys. 15 program- 
mable. IB-key keypad 



t parallel, 1 serial 



12- inch monochrome/80 x 
25 text mode 



monochrome CRT/80 x 
24 text mode 



business- oriented system 



64K 2 SS/DD 5 '-A" floppy 

drives 



standard, 10-key keypad 2 serial, 2 parallel 



64K(2 320K DS/DD 5 W" 

lloppy drives 

64K2 40gK DS.DD half- 
height 5 Vi" floppy drives 



81 keys, 5 multtfunction, 
10-key keypad 



"TJJA" 



1 parallel, 1 serial 

2 serial, 3 parallel 



14-inch color CRT/640 x 
400 res./ 80 x 25 text 
"TITS 



color display added 



1 serial 



640 X 400 color graphics 
capability 

built-in 5" CRT,'256 x 192 
graphics.' 32 ^. 16 text 



micromainframe system 
ssnal port addeo 



Not announced/2 640K 
DS/DD 5 W floppy drives 



standard 



58 keys, 20-key keypad, 
8 special function 



1 serial 



si-rial port added 



32K'built-in tape storage. 
195K 



tidk memory add;: 



256K/1 1MB 8-inch half- 
height DS/DD drive 



66 keys, 25-key keypad, 
23 function 



1 parallel, 1 serial 



80 X 25 monochrome 



12-inch monochrome CRT, 
720 X 300 res.. 80 x 25 

text 

12-inch monochrome 
CRT/80 X 25 text 



O 
O 

-I 
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m 

33 



S 
149 



64K.2 320KDS.DD5W" 
floppy drives 



97 keys, 17-key keypad. 
12 special function 



1 parallel, 1 serial 



12eK/2 320K 5 Va" floppy 
disk drives 



83 keys, 10 special func- 2 serial, 1 parallel 
lion, keypad 



basic system 



itn 
O 



■i 



TABLE 1— $3000-$3500 (continued) 
Manufacturer Model 


Price 


CPU 


Word Length 


Operating System 


Languages 


1 


North Star Computers 


Advantage 8/16 


$3399 


Z80A,8oae 


8/16-bit 


MS-DOS, 
GDOS 


BASIC, FORTRAN, COBOL, 
Pascal 




F Apple Computer 


Apple III 


$3404 


6502B 


8-bit 


Apple SOS 


BASIC, Pascal 




IBM 


IBM-PC 


$3433 


8088 


16-bil 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
Svstem 


COBOL, FORTRAN, 
BASIC, MACRO assembler, 
Pascal 


i 


Canon USA 


A§i6o 


$3445 


8088 


16-bit 


MS-DOS. CP 

M-86 


BASIC, COBOL 




NEC Home Electronics 


PC-8800 


S3447 


Z80A-compa(tble 


8-bit 


CP/M 


BASIC 




NEC Information Syst. 


APC 


$3448 


8086 


16-bit 


CPM-86. MS- 
DOS 


BASIC, COBOL, FOR- 
TRAN, PASCAL, Assem. 




Tele Video Systems Inc. 


TSe02 


$3495 


Z80A 


8-bit 


CP/M 


COBOL 




Alspa Computer 


BC-80D 


$3495 


Z80A 


8-bit 


GP,M 






Sumicom Inc. 


System 330E 


$3495 


3088 


16-bit 


MS-DOS/CP/ 
M-86 


FORTRAN, COBOL, Pas- 
cal, BASIC 




Computer Devices inc. 


DOT-3000Y 


$3495 


8088 


16-bit 


MS-DOS 


BASIC, FORTRAN, COBOL, 
Pascal, Assembler 




Eagle Computer Inc. 


Eagle PC-2 


S3495 


8088 


16-blt 


CP/M-ee. MS- 
DOS 




« 


Digital Equipment Corp. 


Rainbow 100 


$3495 


Z80.8088 


8/16-bit 


proprietary 


Not announced 




Intertec Data Systems 


Superbrain ll ■ 
SD 


■ S3495 


Z80A 


8-bit 


CP/M 


BASIC, FORTRAN 




NEC Information Syst. 


APC 


$3498 


8086 


16-bit 


CP'M-86, MS- 
DOS 


BASIC, COBOL, FOR- 
TRAN. PASCAL, Assem. 




Zenith Data Systems 


ZF-110 


$3499 


8085/8088 


8/16-bit 


CP/M/ZDOS 
(proprietary) 


BASIC, COBOL, FORTRAN 





_l 

g 

Q 



[he user gains access to such high-level languages as BASIC, 
Fortran, COBOL, Pascal, and assembler. 

The graphics resolution of this computer is 640- by 400-dots 
and the text display is 80-characters by 25-lines. Input/output is 
provided by standard parallel and serial ports to which a user can 
add a variety of peripherals including printers and modems. 

The MBE 16000 is fully configured right out of the carton. 



Hyperion 

One of the remarkable events of the last year has been the 
appearance of a number of IBM-workal ike transportable com- 
puters and the Hyperion is one of them. 

Driven by a 16-bit 808S CPU. this micro system comes with 
256K of user memory as standard. 

Capable of running under the near-standard MS-DOS, the 
Hyperion comes equipped with one double-sided, double- 
density 320K minifioppy-disk drive. 

Programmable in BASIC, COBOL, Fortran and Pa.scal, this 
and other data are entered via an IBM-like 84-key low-profile 
keyboard. It features 10 special-function keys and a 10-key 
numeric keypad. Input/output is aided by standard parallel and 
serial pons (extra-cost options on the IBM PC). 

Since it is a transportable, jt has a built-in display. This video 
display is a 7-inch 80-character by 25-line amber unit. It is also 
capable of 640- by 250-dot graphics. 



Radio Shack 

The Model 12 debuts in this price category. A business- 
oriented system, the Model 12 is driven by an 8-bii Z80A 
microprocessor and is equipped with 80K of user memory. 
There is a powerful base of proprietary and second-source 
software available for it which gives the user access to many 
applications. 



This system uses the proprietary TRSDOS system and be- 
cause il does, one can easily assume that it comes with a standard 
disk drive, which it does. The standard drive is a double-sided, 
double-density 8-inch slim-line floppy capable of 1.25M8 of 
mass storage. This amount of storage is enough to satisfy any- 
one's needs at first. 

Programmable in BASIC, this and other data are entered 
through a keyboard with 82 typewriter-style keys. Thi.i unit also 
features eight programmable keys and 1 4 special-function keys. 

An all-in-one unit, the 12-inch green monochrome monitor, 
keyboard and system box are housed in the same cabinet. The 
display is 80 characters by 24-lines in the text mode. Input/ 
output is aided with two standard serial ports and one standard 
parallel port. 

Athena 

This is one of the mon; unusual transporlables on the market 
because it relies on using user memory configured as a disk for 
high-speed storage and data access. Using memory configured 
as a pseudo-disk or virtual memory disk isn't a new idea in the 
microcomputer market, but it is usually an add-on feature, rather 
than a standard one. The key advantage to a memory disk is a 
many fold increase in program execution speed. Further, the 
Aihenc I relies on low-power CPU's and circuitry to have 
effective battery operation. 

The Athena t is driven by dual NSC-800's, low-power ver- 
sions of the popular Z80 8-bit microprocessor. It comes 
equipped with 68K of RAM and 128K of memory dedicated to 
the virtual memory di.sk. 

The user doesn't have to keep this machine powered up 
indefmitcly to retain this storage because Athena makes a 
double-density 5'/i-inch floppy disk available for permenant 
backup. The system runs under the CP/M operating system and 
so the user has a wide range of already-produced programs 
available. 





Memory/storage 


Keyboard 


I/O 


Dtsplay 


Comments 


t 


128K/2 360K DS/DD 5 Vi" 
ftoppy drives 


49 keys, 14-key Iteypad. 
15 function keys 


1 parallel. 1 serial 


12-inch monochrome 
CRT/640 X 240 grapliics 
res./BO x 24 text mode 


basic system 




128K/2 140K SS.'DD 5 V4" 
floppy drives 


61 -key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler, 1 parallel 


12-inch CnT'280 x 
192-560 X 192 graphics 
cap/80 X 24 text 


2nd drive added to I28K Ap- 1 
pie Hi " 


1 


64K/2 320K DS/DD 5 Vi' 
drives 


59 keys, 10 special func- 
tion, 20-key keypad 


1 parallel, 1 serial 


12- inch monochrome/80 x 
25 text 


2nd drive 




Not announced'2 640K 

DS.DD 5 Vi" floppy drives 


standard 


1 serial, 1 parallel 


640 X 400 color graphics 
capability 


parallel poti 




64K'2 1 MB DS/DD 8" flop- 
py drives 


■ 81 keys, 5 multifunction, 
10-key keypad 


1 parallel, 1 serial 


14-inch monochrome 
CRT/BO X 25 text 


dual 8" DS/DD drives ' 




128K2 1MBS-inchfialf- 
heiqiit OS DD drives 


66 keys, 25-key keypad, 
23 function 


1 parallel, 1 serial 


80 ■: 25 monochrome 


1 disk dnve added < 


m 


64K/2 368KDS/DD5W" 
drives 


72 keys, 16 program- 
mable. 17-key keypad 


2 serial, 1 serial RS-422 
poil 


14-inch monachrome/80 x 
25 text 


Ihird serial port '*^-^— J 




64K 2 1.2MB floppy drives 


95 keys 


2 serial, 2 parallel, 1 
RS-422 network port 


12-inch monochrome/80 x 
25 text 


basic system 

! 


be 


128K/2 720K 5 V*" floppy 
dives 


95 keys, 8 special func- 
tion, 10-key keypad 


1 serial, 1 parallel 


monochrome CRT 


£ ittv>\ ■■■1 dnvKb 




128K1 3W'280Kmicro 

floppy drive 


59 keys, 10 function 
keys, 18-key keypad 




monochrome (built-in)/80 
X 24 text 


64 K RAIWl added 


1 


128K,'2 320K DS/DD 5 W" 
floppy drives 


105 keys 


2 serial, 1 parallel 


12-inch high-res. mono- 
chrome/720 X 352 
capability/80 x 25 text 
mijde 


2nd drive added | 




64K'2 400K 5 !i" floppy 
drives 


58 keys, special func- 
tion. 14-key keypad 


1 serial, 1 RS-423 syn- 
cfironous 


monochrome Cf1T/80 x 
25 text 


basic system 




64K/2 1.5MB 5'/*" (loppy 
drives 


62 keys, 18-key keypad 


2 serial 


12-inch monochrome/80 x 
24 text mode 


disk capaaty increases by 

750K 


h 


128K/1MB 8-inch tialf- 
fieigfit DS/DD drive 


66 keys, 25-key keypad, 
23 function 


1 parallel, 1 serial 


80 X 24 color, 640 x 200 
mono res.. 160 x 10016- 
color, 320 X 200 4-color 


color CRT added to 1 drive 
model 




128K/2 320KDS/DD5W' 
drives 


77 keys, 18-key keypad, 
13 special function 


2 serial, 1 parallel 


user option 


basic system 



Programmable in high-level Pascal, this and other data are 
input via a standard typewriter-style keyboard. Input/output is 
provided by two standard serial ports and one parallel port. 
These can be used to interface with a wide variety of peripherals. 

The Athena I makes one other departut^ from standard 
transportable configuration with its display. Unlike other trans- 
portables that use power- hungry CRT's, this small system uses a 
four-line, 80-character liquid crystal display. It seems this unit is 
a cross between the lap and the transportable computer, An 
external video output is available for a standard video display. 

Computer Devices 

The DOT-iOOOX is another of the many IBM-workalike trans- 
portables on the market. 

Driven by a 16-bit 8088 microprocessor, the DOT-3000X 
comes with 128K of RAM, This amount of memory should 
enable the user to take advantage of the new generation of 
powerful 16-bit software coming to the market. 

Capable of operating under MS-DOS (MicroSoft Disk Op- 
crating System), the DOT-3000X comes with a 3.5-inch 280K 
microfloppy disk drive. It is programmable in BASIC, Fortran, 
COBOL, Pascal, and assembler. 

User input is via a typewriter-style keyboard with 59 keys. 
There are also 10 special-function keys and an 1 8-key numeric 
keypad. Output is via a built-in SVi by 9-inch display that is 
capable of an 80-character by 24-line text mode. 



Sanyo 

Another of the many 16-bit machines on the market is another 
offering from Sanyo, the MBC 4000. Driven bv a i 6-bit 8086 
CPU, the MBC 4000 comes equipped with I28K of RAM. 

Departing from what seems like the norm today, this system 
runs under the 16-bit version of CP/M. CP/M-86, which, at the 
moment, limits the user in ihe amount of software thai has been 



written for this system. However, Digital Research, the produc- 
ers of CP/M-86, indicates tha^ this will soon change and more 
companies will write software for this operating system. 

Since it has an operating system, one can assume it also has a 
disk and il does. It comes equipped with a 640K slim-line 
double-sided, double -density minifloppy disk drive that saves a 
great deal of space. 

Programmable in BASIC and assembler, this and other data 
are input via a keyboard containing 60 keys, 15 programmable 
keys and an 1 8-key numeric keypad. Input/output is provided by 
standard serial and parallel ports. 

The standard display device for the 80-character by 25-!ine 
text display of the MBC 4000 is a 12-inch monochrome unii. 

An upgraded system, iht 3000Y, is also included in this price 
category. In this higher-cost version, the amount of user mem- 
ory doubles. 



Xerox 

Long active in the office-product market, Xerox has an entry 
in the small-computer sphere, the 820-11. First released as the 
820, this system was upgraded last year. 

Driven by an 8-bit Z80A CPU, the 820-11 comes equipped 
with 64K of RAM. It features two standard single-sided, 
double-density mini floppy -disk drives for storage. It operates 
under CP/M and gives the user access to the wide variety of 
programs available under that operating .system. 

Input/output is handled by a standard serial port to which a 
variety of peripheral equipment can be interfaced, while video 
output (80 characters by 24 lines of text) is handled by a standard 
monochrome display- 
IMS International 

An S-100 micromainframe system is available from IMS 
International, the 5000SX. 



O 

o 

m 
3 



151 



I CO 

o 

z 
o 

i 

111 



o 
o 
< 




THE HYPERION ts a transpOFlable IBM workalll 



The 5000SX is a Z80-based, 8-bit system thai includes two 
409K double-sided, double-density minifloppy-disk drives for 
mass storage. It is capable of operating under CP/M and this 
gives the user a wide choice of application programs. 

When this disk storage is combined with the 64K of RAM, the 
system's power is quite evident. It will easily handle many 
routines a user may choose to run. 

With two standard serial ports and three standard parallel 
ports, one can see the 5000SX is the basis of a multiuser system. 
With this number of input/output ports, a user can interface two 
terminals and three printers or a terminal, modem, and several 
other peripherals. Thus, more than one person can use this 
system, if it has more than one terminal installed. With the 
number of parallel ports, it can act as the mainframe driving 
several peripherals in an office or manufacturing setting. 

Columbia Data Products 

Every day it seems that one manufacturer or another is in- 
troducing an IBM-workalike small-computer system and 
Columbia is no exception. Its 1600-1 is driven by the same 
16-bit CPU, an 8088, used by IBM and it runs under the same 
operating systems, MS-DOS. CP/M-86 (available for the IBM 
PC) and UCSD p-System (also available for the PC). 

With 128K of RAM, the basic version of the 1600'! has twice 
the memory of the basic PC. It also includes two 320K double- 
sided, double-density 5'/4-inch minifloppy disks as standard for 
mass storage. This system is programmable in BASIC and 
assembler. 

Equipped with an 83-key typewriter- style keyboard, this unit 
includes 10 special-function keys — as does the IBM — and a 
numeric keypad, (The importance of a numeric keypad can't be 
underestimated. It speeds numeric data entry and makes the 
system far more flexible to use.) 

With two standard serial ports and one standard paraUel port, 
the user has a number of interfacing options. He can use the 
serial ports to support printers, plotters, or modems and he can 
use the parallel port to support a printer. IBM makes these user 
options. 

An 80-characler by 25-line text display is read on a standard 
12-inch monochrome video display. 

North Star 

North Star's all-in-one Advantage 8/16 combines all the fea- 
tures of an 8-bit small computer with those of a 16-bit machine 
by using dual Z80A and 8088 CPU's. This gives the user access 
to the wide variety of programs available for each type of 
system. 

With 128K of RAM, the Advantage 8116 is a versatile ma- 
chine thai is programmable in BASIC, Fortran, COBOL, and 
Pascal. It provides two standard 360K double-sided, double- 
density minifloppy disk drives for storage. 

Equipped with a typewriter-style keyboard, having 49 keys, it 
also includes a 14-key numeric keypad and iS special-function 
keys. User input is handled by this device. However, input can 
also come via the standard serial port. 



Output, on the other hand, is displayed on a standard 12-inch 

monochrome video screen, either as 640- by 240-dot graphics or 
80-character by 25-line text. Output can also be routed through 
the standard parallel port to a printer. 

TeteVideo 

The TeleVideo TS 802 is another of this computer man- 
ufacturer's Z80A-based. single-user systems. Fully configured 
right from the box, it includes two standard 368K double-sided, 
double-density minifloppy-disk drives. 

With 64K of RAM. the TS 802 is easily able to handle many 
tasks. When this amount of user memory is combined with the 
standard disk drives, one can easily see it is a powerful system, 
capable of running under the Indus try -standard CP/M operating 
system. 

Programmable in COBOL, this and other data are entered via 
a typewriter-style keyboard with 72 keys. The keyboard also 
features 16 programmable keys and a 17-key numeric keypad. 
Input/output is provided by two standard serial ports and an 
RS-422 serial port. 

Since this is a fully configured system, the video-display 
device is standard. It uses a 14-inch monochrome screen to 
display 80 characters by 24 lines of text. 

Alspa 

A newcomer to the small -computer arena, the Alspa BC-800 
includes a great deal of bundled (included) software. Rely ing on 
proven 8-bit Z80A technology, this system comes with 64K of 
RAM. 

A fully configured system, it comes with two 1 .2MB fioppy- 
disk drives for storage — a valuable asset. It operates under 
CP/M, which provides the user with access to a wide variety of 
proven application programs. 

Data is input via a 95-key keyboard and it is output to a 
standard 12-inch monochrome display. Input/output is provided 
by two standard serial, two standard parallel and one serial 
RS-422 port. 

Sumlcom 

Sumicom's System S30E is another of the IBM workalikes on 
the market and it u.<»es the same CPU, the 16-bit 8088, that IBM 
chose for its Personal Computer. 

Equipped with 128K of user memory — enough lo handle the 
biggest of spreadsheet programs — the System 3S0E comes with 
two 720K 5 '/a- inch minifloppy disks for inass storage. This 
feature makes this system far more flexible than relying on one 
disk. Adding to its capabilities are the operating systems avail- 
able, MS-DOS and CP/M-86. 

This typewriter-style keyboard with 95 keys also includes 
eight special-function keys and a 14-key numeric keypad. 



I 




ZENITH'S LOW PROFILE ZF-tOO Is a powerful machine. 



162 



Vctuatiy a system upgrade over lower-pnced versions, Uie 
Sysiem 330E is capable of input and output through standard 
serial and parallel potts. Video output via a monochrome video 
display device. 

Eagle 

The Eagle PC-2 is another of the IBM-workalikes on the 
market and uses the same CPU that is used in the IBM PC, a 
16-bit 8088. 

The computer comes with 1 28K of RAM , or twice that of the 
IBM. This is enough to handle any of the 16-bit applications 
programs on the market. 

That it can run programs written under either MS-DOS or 
CP/M-86 indicates it has standard disk drives, and it does. The 
Eagle PC-2 comes equipped with dual 320K 5'/i-inch miniflop- 
py disk drives. This feature makes it a highly versatile system. 

User input is via a 105-key keyboard and input/output is 
handled via two standard serial pons and one standard parallel 
pon. 

A fully configured system, video output is to a standard 
12-inch high-resolution monochrome display that's capable of 
an 80-character by 25-line text display. 

DEC 

Long the leader of the minicomputer world. Digital Equip- 
ment Corp. joined the microcomputer world a year and a half 
ago with its relea.se of several small-computer systems. These 
systems included the Rainbow 100. 

Equipped with Z80 and 8088 CPU's, this system uses a 
proprietary operating system that allows the user access to the 
world of CP/M and MS-DOS. 

The computer comes with 64K of RAM, or enough to handle 
fairly complex tasks. The dual-standard minifioppy-disk drives 
are capable of 400K of storage apiece and add to the versatility 
of this sysiem. 

The main slim-line, typewriter-like keyboard has 58 keys 
including special-function keys and a !4-key numeric keypad. 
Output to the user is handled via a high-resolution monochrome 
video display. 

Fully configured, this system includes one standard serial port 
and one serial RS-423 synchronous port. 

Intertec 

The Intertec Siiperbrain 11— SD is the third upgrade of this 
manufacturer's all-in-one scries of microcomputers. Using dual 
Z80A 8-bit CPU's, this system has 64K of RAM, and uses the 
CP/M operating system. 

It upgrades in its disk storage capability. This system now has 
two 1.5MB super-density 5'^-inch minifloppy-disk drives. An 
all-in-one unit, ii includes a 12-inch monochrome display in the 
same cabinet with the system box and the keyboard that contains 
62 typewriter-like keys, a 25-key numeric keypad and 23 



•^-\ •^ 







1 i ' ' ^ 

f / 

1 Dor 


p 

¥ 


^^^'"'Try 





l^< 



uainpuliBPi 

$3000-$3500 



COMPUTER DEVtCES' OOr-3000X Is another transportable IBM work- 
alike. 



special-function keys. This box also houses the two standard 
serial ports. 

Zenith 

The second member of the Zenith Z-!00 family appears in this 
price category, the all-in-one version, called the 2.-120. This 
unit combines the keyboard, system box, and video-display tube 
into one cabinet, much like the computer workstations with 
which many people are familiar. Unlike those terminals, which 
are usually linked to a mainframe and lack any real power of 
their own, the Z-}00 is a fuli-blown small-computer system. 

Driven by an 8-bit 8085 and a 16-bit 8088, this 8/16-bit 
system comes with 128K of RAM. An IBM-workalike, it has 
twice the memory of the IBM PC. 

Because it uses the proprietary Zenith Disk Operating System 
(ZIX3S) and CP/M, one can assume it has a disk drive included 
as standard for storage, and it does. The disk drive is a 5'/4-inch 
minifloppy 320K double-sided, double-density unit. This com- 
bination is powerful enough to give a user a good start in 
microcomputing. 

Programmable in BASIC, COBOL, and Fortran, this and 
other data are entered via a typewriter-style keyboard with 77 
keys. This keyboard includes an 1 8-key numeric keypad and 
nine special-function keys. Input/output is provided by two 
standard serial ports and a parallel port. 

Since it's an all-in-one unit, the video-display tube is included 
in its basic configuration. It's a 12-inch monochrome display, 
capable of displaying 80-characters by 24-lines. 

The low-profile system, the ZF-JOO, upgrades in this price 
category to become a fult-feamred system, with the exception of 
a standard display. This upgrade adds a second disk drive to the 
low-profile ZF-lOO system. The video display is still a user 
option. 

Hewlett-Packard 

The HP86B system upgrades with the addition of more user 
memory~l28K now — and a 3. 5 -inch 270K microfioppy drive. 
More and more manufacturers are turning to this type of drive 
because of the space savings. Like a minifloppy, it makes a 
system more versatile. 

At the same time, the HP86A is also upgraded with the 
addition of the same type of 3.S-inch drive, while the HPS5A 
upgrades with the addition of a serial port. This gives the HP85A 
telecommunications capability if you add a modem or the 
capability to interface with a serial printer, rather than relying on 
the built-in thermal printer. 

IBM 

The IBM Personal Computer becomes more powerful and 
capable of high-resolution color output with the addition of a 
color video-display tube to the double-sided, double-density 
drive model. In this configuration, a serial port is also added for 



I 



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i 

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m 

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to 
on 



153 



communications capability, if you choose, or to interface with a 
serial printer. 

The second upgrade- — a second disk drive for storage — brings 
the IBM Personal Computer to its full configuration. Now it has 
two disk drives for added flexibility in mass storage and data 
access. 

Apple 

The Apple He is just about fully configured in this price 
category. In the latest upgrade, a second minifloppy-disk drive 
is added for greater mass storage. 

At the same time, the Apple HI upgrades twice. In (he first 
upgrade, a standard high-resolution video display device is 
added to the 256K version of this small -computer system. 

The 128K version of the same .system becomes fully con- 
figured with the addition of a second minifloppy disk drive for 
mass storage. 

NEC 

The NEC APC becomes a far more powerful system with its 
three upgrades. The first adds I28K to the amount of RAM, 
while the second adds a disk drive. At once, this upgrade makes 




EPSOM'S aX'^O desktop computer features two double-sided, double- 
density disk drives and runs the CP.M operating system. 



the system far more flexible. The third upgrade adds a color 
video-display device to the one-drive needed and gives you 
color-graphics capability. 

The PC-8800, now an 8/16-bit system with access to both 
CP/M and MS-DOS, the leading operating systems of the 8-bit 
and 1 6-bit worlds, now becomes fuliy configured as dual 320K 
double-sided, double-density disk drives are added. It gains 
even more capability as the disk-drive capacity is increased even 
further with dual eight-inch fioppy-disk drives. 

Toshiba 

With the two upgrades to the T300 small-computer system, it 
makes the transition from a monochrome microcomputer with 
two drives to a color computer with two drives. 

The first upgrade brings the monochrome system to full 
configuration with the addition of a second disk drive. This 
increases the fiexibility of this system. 

Under the second upgrade, the monochrome display is 
changed to a high-resolution color display and this system gains 
color-graphics capability, if the user chooses to use it. 

Sony 

The SMC -70 system becomes quite full-featured here. With 
its first upgrade, a second disk drive incrca.ses this system's 
storage flexibility and capability. This system was the first to 
make use of 3. 5- inch microfloppy-disk drives, which a number 
of other microcomputer companies are also making use of. 
However, this isn't yel the standard size because there are also 
varieties available in the 3 to 3.25-inch range. 

The second upgrade substitutes a high resolution RGB color 
video-display device for the monochrome display and gives this 
.system its full configuration. 

Canon 

In this price category, the Canon AS 100 system upgrades 
three times. The first upgrade gives this system color-graphics 
capability with a color video-display tube capable of a 640- by 
4()0-dot resolution. 

In the second upgrade, a serial port is added to the ASlOO's 
configuration. The third upgrade, adding a parallel interface, 
frees the serial port for communications use solely. (The parallel 
port can be dedicated to a printer.) 

Texas Instruments 

The Professional Computer becomes nearly fully configured 
in this price category with the addition of a second double-sided, 
double-density 32C(k minifioppy-disk drive. This addition gives 
the user access to a second disk which speeds system operation. 

Casio 

The Casio FX-9000P has its memory increased to 32K with 
the addition of 28K of memor>'. Further, the versatility of this 
small system is increased wUh the addition of a minifloppy-disk 
drive. 

LNW Research 

The LNW80 Model II becomes a fully configured system with 
the addition of a second minifloppy-disk drive. 

Sord 

Although the name M23 Mark III C looks as if it might be a 
new system, it is, in reaOty, an upgraded Sord M23 system. In 
this configuration, the system upgrades and gains color capabil- 
ity with, as you might expect, the addition of a color video- 
display device. 

Comnnodore 

The 8032 system, which was introduced several price 
categories ago. makes its appearance again, now in its fully 
configured state. This system, which includes a standard CRT, 
now aiso has duel 5'/4-inch minifloppy-disk drives included lor 
storage. R-E 



IS4 




An innovative lap computer 
is among the new machines 
we see here. 



^3500 to ^4000 



MARC STERN 



AS WE MOVE INTO THE HrCHER PRICE CATEGORIES, PERHAPS 

you've noticed how more and more central processing units 
have become 16-bit devices. This contrasts quite markedly with 
the situation a year ago, v^-hcn the majority of higher-priced, 
small -computer systems on the market were still 8-bit machines. 

Why has this happened? The key reason is IBM's move into 
the microcomputer market. It has legitimatized the 
microcomputer in the eyes of many and it has created a vast 
market of new users. Seeing this, the rest of the microcomputer 
industry has jumped aboard the bandwagon with new IBM- 
workalikc or compatible systems. A second reason, that is just 
as important, is that the microcomputer industn' has .seen the 
power available in the 16-bit CPU and it wants to make use of 
thai power. 

In this price category. 1 1 new systems make their debuts. 
Most are from manufacturers that have already been introduced 
in other price categories. However, there are four new compa- 
nies that make their appearances here. Let's begin our look at 
this market with those four new companies. Then we will 
explore the rest of the category and see how various systems 
tipgrade. 

Gavilan 

The Gavilan is one of the most innovative of the new genera- 
tion of lap computers, now making their dehuts. It is very 
frankly aimed ai the business market and makes no bones about 
saying so. Because it is, this .system includes a variety of 
bundled (included) software for word-processing, appointments 
and other business-oriented tasks. They are contained in plug-in 
capsules, as the company terms them. 

Perhaps the most innovative fact about the Gavilan is its size. 
Even though it includes a microdisk drive for storage a.s part of 
its basic configuration, it easily folds up and fits into the average 
briefcase. If you've looked closely at the chart you've probably 
noticed that it only comes with 32K of RAM. Other ROM-based 
functions reside in another 32K of built-in memory and this 



leaves a full 32K available for the user, This ROM handles much 
of the work that RAM is required to do in other systems. This 
.system is driven by a 1 6-bh 8088 microprocessor, that makes it 
another of the many IBM-workalikes that are now on the mar- 
ket. 

Because it does have a standard disk drive it needs an operat- 
ing system and the one Gavilan has chosen is the near-standard 
16-bit operating system, MS-DOS, Due to the extensive pack- 
age of software included with this system, a user really won't 
have need of much more software than that included. 

The Gaviian's other unique feature is its "mouse." A re- 
latively new feature in the small-computer worid, a mouse is a 
small device that rolls around a desk top. It interfaces with the 
system's memory and lets the user move the cursor all over the 
screen. This eliminates the need for keyboard use and lets the 
user pick a function from several on the screen, provided a 
program has this type of feature, by just moving the mouse 
around. But rather than relying on a true "mouse, ' ' Gavilan uses 
a touch-sensitive plate under the 8 line by 66-character liquid- 
crystal display so a user can access a particular function. 

Fujitsu 

A leading Japanese computer manufacturer, Fujitsu has an 
entry in the microcomputer field, the Micro 16, a unit with 8- 
and 16-bit co-processors. 

Driven by either a proven 8-bit Z80 A CPU or a reliable 1 6-bit 
8086 — the bigger brother of the 8088 — the Micro 1 6 has access 
to the world of CP/M and its many programs. Concurrent CP/M 
and its multitasking capabilities, or optional MS-DOS. This 
gives the user access to a versatile software base. 

Equipped with 1 28K of user memory , this system will easily 
handle any of the many sophisticated programs available on the 
market today. Its mass-storage capabilities — ^two standard 320K 
double-sided, double-density miniftoppy-disk drives — is also 
easily up to any task given the system. 

The keyboard has a total of 98 keys and a separate numeric 



I 
I 

\ 



o 

o 
w 
m 
J} 

CO 
CD 
U 

1SS 



to 


TABLE 1— $3500-$4000 
1 Manufacturer 


Model 


Price 


CPU 


Word Length 


Operating System 


m 

Languages 




r^ 


Athena Computer 


Athena 1 


$3500 


NSC-800 (low- 
power 280) 


8-blt 


CP/M 


Pascal 


4 


li 


Texas Instruments 

i 


Professional 
Computer 


S3515 


8088 


16-bit 


MS-DOS. CP 
M-86, UCSD p- 
System 


Macro Assembler, BASIC, 
COBOL. FORTRAN. Pascal 






Basis Inc. 


Basis toa 


S3S90 


Z80A/6502 


e-bit 


CP/M, Apple 


BASIC. Pascal, LOGO M 


m 




Tele Video Systems Inc. 


IS 1603 


$3590 


8088 


16-bit 


CP.M-86, MS- 
DOS 


COBOL 






Compaq Computer Corp. 


Compaq ^9H 


[^$3590 


8oee 


16-blt 


Compaq DOS 
(Similar to IBM 
PC-DOS> 


BASIC 


1 


|i 


|Zenith Data Systems 


ZF-100 


S3598 


8085'8088 

« 


8/16-bit 


CPMZDOS 

(proprietary) 


BASIC. COBOL. FORTRAN 






IBM 


IBM-PC 


" S3598 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FORTRAN, 
BASIC, Macro Assembler, 
Pascal 


1 




Zenith Data Systems 


Z-120 


S3599 


8(1858088 


8/16-bit 


CPM,ZDOS 
(proprietary! 


BASIC. COBOL. FORTRAN 






Sage Computer Tech. 


Sage It 


S3600 


MC68000 


1&32-bit 


UCSD p-Sys- 
tem, CP/M-86K. 
Modula 2, 
Hvper-FORTH 


BASIC, FORTRAN, Pascal. 
Assembler 


i 


ta 


LApple Computer 


Apple III 


$3604 


6502B 


e-brt 


Apple SOS 


BASIC, Pascal 


J 




Zenith Data Systems 


ZF-100 


$3638 


8085/8088 


8/16-bit 


CP/M/ZDOS 
(propnetarv) 


BASIC, COBOL. FORTRAN 


1 




Sony 


SMC-70 


S3645 


Z80A 


8-bit 


CPM 


SASld, CB-80, Pilot Plus 




1 


Texas Instruments 


Professional 
Computer 


$3670 


8088 


16-bit 


MS-DOS, CP/ 
M-86, UCSD p- 
Svstem 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 




1 


BIBM 


IBM-PC 


$3677 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
Svstem 


COBOL. FORTRAN, 
BASIC, Macro /Assembler, 
Pascal 


4 


r 


D^iiiaIc«(l<J'Inr6-Tech Corp. 


Hyperion 


' $3690 


8088 


16-bil 


MS-DOS 


BASIC, COBOL, FORTRAN, 
Pascal 


1 


i 


Basis Inc. 


Basis 108 


S3690 


Z80A6502 


8-bJt 


CP.'M. Apple 


BASIC. Pascal, LOGO 






' IMS International 


5000IS 


$3700 


Z80 


8-bit 


CP/M. MP/M 
TurboDOS 


BASIC. COBOL FORTRAN. 
Pascal 


m 


■ 


LSony 


SMC-70 


$3700 


Z80A 


8-bit 


CP''M 


BASIC, CB-80, Pilot Plus 




r 


Compaq Computer Corp. 


Compaq 


"$3705 


8088 ■" 


"mm — 


Compaq DOS 
(Similar to IBM 
PC-DDSl 


BASIC 




1 


Hewlett-Packard 


HP-85A 


$3735 


Not announced 




Proprietary 


BASIC. Assembler 






Sord Computer 


M23 Mark V G 


$3785 


Z80A 


e-bit 


Proprietary, CP/ 
M-compatible 


BASIC. Pascal, FOHTFIAN 






Wang Laboratories 


Professional 
Computer 


$3790 


8086 


16-bit 


MS-DOS. CP M 

emulation 


BASIC, COBOL, FORTRAN, 
Pascal 






Hewlett-Packard 


H85B 


$3790 


Not announced 




Proprietary 


BASIC, Assembler 






Commodore Business 

Mach. 


SuperPET 


$3790 


6602'6809 


B-bit 


Proprietary 


BASIC, APL, COBOL, FOR- 
TRAN, Pascal 






Toshiba America 


T300 


$3795 

« 


8086 


16-bil 


MS-DOS, CP/ 
M-86 


BASIC 




o 


Columbia Data Products 


1600-1 


$3840 


8088 


16-btt 


MS-DOS 


BASIC, Assembler 




o 

1- 
o 

UJ 


IBM 


IBM-PQ- 


- $3842 


8088 


■ 16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL. FORTRAN, 
BASIC, Macro Assembler, 
Pascal 


i 


m 
6 


NEC Home Electronics 


PC-880O 


$3846 


Z80A-compatJ- 
ble/8086 


8,'16-bit 


CP M, CP 
M-86, MS-DOS 


BASIC 




< 
a: 


Hewlett-Packard 




~- $3665 


Not announced 




UCSD p-Sys- 
tem. CP/M 


BASIC, Pascal, FORTRAN 


1 



156 





1^ 

Memory. Storage 


Keyboard 


10 


Display 


Comments | 


,Bb 68K'266K of RAM-disk stor 
H age/1 OD 5 '/<" floppy 
V induded 


- standard 


2 serial, 1 parallel 


80-character x 4-line liq- 
uid crystal display/external 
CFfT conrvedor 


J 


64K/1 320K DS/DD 5 >a" 

floppy drive 


97 keys, 17-key keypad. 
12 special function 


1 parallel, 1 serial 


13-inch color CRT, 720 > 
300 res.. 80 k 25 text 


Jisk 
version 1 


^ 1 28K;'2 5 >/V' (loppy driv- 
H Bs/ZSeK memory (RAM) 
RF disk added 


58keys. l5pnogram- 
mable, number keypad 


1 parallel, 1 serial 


RGB and composite/280 
X 192 rBs./80 X 25 text 


' - : ;'y HAM-viiSK m 


256K 2 half-height 368K 
DSDD floppy drives 


72 keys. 16 program- 
mable. 16-key keypad 


2 serial, 1 serial RS-422 
port 


14-incfi monochrome '80 • 
25 text 




128K'2 5 V*- DS'DD drives, 
640K 


83 keys, iO-key keypad, 
to special funct. 


1 parallel, opt. serial 


9-incfi monochrome (built- 
In)/e0 X 25 text 





L 



128fC'1 320K DS/DD 5 '/«" 

drive 

12eK/2 32DK DS/DD 5 V*" 

drives 



77 keys, 18-key keypad, 
13 special fund. 
59 keys, 10 special lunc- 
tion. 20-key keypad 



2 serial, 1 parallel 



color CRT/640 x 225 
high-res., 80 x 25 lines 



high-res. color CHI added 



12-incti monochrome/so x 
25 text 



nSoKWy^&fpHnd^ to V^K" 



1 parallel, 1 sertal 



128K/2 3^0K DS/DD 5 '/," 
drives 



77 keys. 18-key keypad. 
13 special funct. 



2 sertal, 1 parallel 



built-in 80 >; 25 mono- 
chrome CRT 



^na drive adoea 



2 serial, 1 RS-43B, 1 
parallel 



i 



128K/1 640K 5 Vt" floppy 
drive 



N/A 



N/A 



powerful MC68000-based mi- 
cromainframe 



~2nddriveaHdedTo"256irSp^ 
pie III 



256K,'2 140K SSDD 5 'A" 
floppy drives 



61-key typewriter, 13-key 
keypad, 2 program- 
mable 



1 serial, 2 game control- 
ler, 1 parallel 



128K.'2 320K DSOD 5 Vi" 
drives 



77 keys, 18-key keypad. 
13 special fund. 



2 serial, 1 parallel 



12-inch CRT,28D x 
192''560 X 192 graphics 
cap.,80 X 24 text 



green monochrome 
CRT/eo X 25 text 



12-inch RGB high-res. 
color CRT 



:RTsiiD5iTinM(«dta- 



64K-'2 280K 3.5" microflop- 
py drives 



72 keys, keypad, 
special function 



1 parallel, 1 serial 



128K/2 320K DS/OD 5 V," 
floppy drives 



97 keys. 17-key keypad, 
12 special function 



1 parallel, t serial 



1 parallel, 1 serial 



12-inch monochrome CRT, 
720 X 300 res., 80 x 25 

display 

12-incn high-res. color dis- 
play/80 X 25 text 



color display aoaea to 'd-am& \ 
DS/DD system 



64Kj'2 320K DS, DD 5 Y*" 
drives 



59 keys, 10 special func- 
tion, 20-key keypad 



I 



256K/2 320K DS/DD 5 W 
floppy drives 



84 keys, 10 function 
keys, 10-key keypad 



1 sertal, 1 parallel 



7-inch amber monochrome 
CRT/80 X 25 text 
mode/640 x 250 graphics 



RGB and composite 280 
X 192res..80 x 25 text 



r 



128K'2 5 Vi" floppy driv- 
es '256K memory (RAM) 
disk 



58 keys, 15 program- 
mable, keypad 



1 parallel. 1 serial 



■greater speea acaea 



64K/2 409K DS/DD haff- 
height 5 V*" (loppy drives 



64 keys, 14 special fune- 
tion, t9-kev keypad 



1 serial 



monochrome CRT/SO 
24 text mode 



basic systen 



12-inch green CRT/80 x 
25 text 



r 



64K.2 280K 3.5" microflop- 
pv drives 



128K/2 5 54" DS/DD drives, 
640K 



72 keys, keypad. 9 
special function 



1 parallel, 1 serial 



83 keys. 10-key keypad, 
10 special funct 



1 parallel. 1 serial 



9-inch monochrome (built- 
in)/80 X 25 text 



32K'built-in tape storage, 

tgsK 



58 keys, 20-key keypad, 

8 special function 



1 serial, 1 general pur- 
pose interface 



built-in 5' CRT 256 ^ 192 
graphics. 32 x 16 text 



128K/2 1MB 8" drives 



59 keys, 20-key keypad, 
9 special (unction 



2 serial, 1 parallel 



12-inch green CRT 



^ 



128K.'2 360KDS/DD5' 

floppy drives 



101 keys, 16 prog ram - 
rn able , 1 87 key keypad 



1 parallel, 1 serial 



monochrome CRT 800 

300 

buill-in5"CHl/256 x 
graphics, 32 x leiaxt 




t60K/<ape drive'RAM disk 



58 keys, 20-key keypad, 
8 special lundion 



96K-dual 5 ' 

drives 



' floppy disk 



standard, numeric key- 
keypad 



1 serial 



12-inch monochrome 
CRT'80 >; 25 text mode 



192K/2 640K 5 y*" drives 



67 keys, 18 special 
funct., 10 edit, 18-key 
keypad 



1 parallel, t serial 



640 X 200. 80 X 25 in 
text mode 



256K/2 320K 5 W" 
disk drives 



128K'2 320K DS/DD 5 Vt" 
drives 



floppy 83 keys, 10 special func- 
tion, J<e^gad_ 



2 serial, 1 parallel 



12-inch monochrome 
CRT.'80 X 25 text 



59 keys, 10 special func- 
tion, 20-key keypad 



1 parallel, 1 serial 



12-inch high- res, color dis- 
play/80 X 25 text 



128K2 320K DS DD 5 'A" 
floppy drives 



81 keys. 5 multifunction, 
10-key keypad 



1 parallel, 1 serial 



14 -inch color CRT..'640 
400 res..80 x 25 text 



ir.ch system 



64K/2 270K 3.5-inch ml- 
c rod rives for storage 



59 keys, 20-key keypad. 1 parallel 
14 special function 



9" monochrome CRT/80 
25 text 



o 

"Z. 

o 

CL 

o 

LU 

_l 
lU 

6 
5 
< 



TABLE 1— S3500-S4OOO (continued) 
Manufacturer Model 


Price 


CPU 


Word Length 


Opera! Inq System 


Languages 




^ 


Texas InstrumerHs 


Professional 
Computer 


S3870 


8088 


16-bit 


MS-DOS. CP.' 
M-86. UCSD p- 
Svstem 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 


1 


Vector Graphic Inc. 


Vector 4/10 


$3895 


Z80B, 8088 


8/16-bit 


CP/M-86, MS- 
DOS (optional), 

CP-'M 


Not announoed 




1 


Micro Source 


M6000P 


S3900 


Z80A 


8-bit 


CP/M 


Not announced 




IB 


Compaq Computer Corp. 


Compaq 


$3910 


8088 


16-bit 


Compaq DOS 

(Similar to iBM 
PC-DOSt 


BASIC 






IBM 


IBM-PC 


$3928 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86. UCSD p- 
Svstam 


COBOL, FORTRAfJ. 
BASIC, MACRO Assembler, 
Pascal 


1 


Digital Equipment Corp. 


Professional 325 


$3945 


PDP-11/238 


16-bit 


Proprietary, 
CP/M optional 


Not announced 




1 


Athena Computer 


Alfiena 1 


$3950 


NSC-80O (low- 
power Z80) 


8-bit 


CP/M 


Fiscal 






Hewlett-Packard 


HP120/125 


$3975 


280A 


8-bit 


CP/M 


BASIC, Assembler 




i 


Hewlett-Packard 


HP200 


$3985 


MC68000 


16'32-bit 


N'A 


BASIC. Pascal, HPL 






1 Computer Devices Inc. 


DOT-3000Z 


$3995 


8088 


16-bit 


MS-DOS 


BASIC, FORTRAN, 
Pascal. Assembler 


COBOL, 




Gavllan Computer Corp. 


Gavifan 


£3995 


8088 


16-bii 


MS-DOS 


BASIC, Pascal 




1 


Sanyo 


MBC 4050 


S3995 


8086 


16-bit 


CP.'M-86 


BASIC, Assembler 






Toshiba America 


T250-4 


$3995 


Z80 


8-bit 


CP/M 


BASIC 






Eagle Computer Inc. 


Eagle IIE-4 


$3995 


Z80A 


8-bit 


CP/M 


BASIC 






Fujitsu Microelectronics 


Micro 16 


$3995 


Z80A, 8086 


8/16-bit 


CP/M-86, Con- 
current CP/M/ 
MS-DOS op- 
tinnal 


Not announced 




i 


NEC Home Electronics 


PC-8800 


$3997 


Z80A-compati- 
ble'8086 


8/16-bit 


CP.M, CP- 
M-86. MR-nOS 


BASIC 






iRadlo Shack 


TRS-SO Model 12 


$3999 


Z80A 


8-bit 


TRSDOS 


BASIC 




• 



keypad, plus 10 programmable keys. This device handles user 
input, while input/output is handled by standard serial and 
parallel ports. The video display delivers 640 by 200-line high- 
resolution graphics or an 80-charac£er by 25-Iine text mode. 

Micro Source 

The Micro Source M6000P is an industry-oriented S-100 
compatible transjxjrtable microcomputer system. (The industry- 
standard S-100 bus features a 100-line bus thai accessory cards 
are plugged into. The micprocessor's motherboard [% also tied 
into this bus. ) The M6000P has 64K of RAM and operates under 
CP/M, Because it operates under CP/M, the operator has many 
programs to use with the standard 376K double-sided, double- 
density 5'A-inch minifloppy disk drives. 

User input is \'ia the keyboard that has a total of 83 keys, 
including four function keys and a separate 14-key numeric pad. 
Standard serial and parallel ports handle inpuL'output. The built- 
in monochrome display is a 9-inch screen that displays 80 
characters by 24 lines. RGB outputs are also available for color 
graphics. 

Sage 

The Sage // is a powerful , multiuser MC6800O-based small- 
computer system. Its 16-, 32-bit MC68DO0 CPU makes it 
special, because few other systems use this powerful micropro- 
cessor chip (a situation that's likely to change in the relatively 



near future). Actually a micromainframe, the Sage //has 128K 
of standard user memory available, enough for a single-user 
system, but really not enough for an extended multiuser system. 

The single 54()K 5 '/j-inch minifloppy disk drive gives the user 
of this system a great deal of initial mass storage, k can run 
under several high-level operating systems and the system is 
programmable in BASIC, Fortran, Pascal, and assembler. 

Since this is the basis of a multiuser system, it includes several 
standard input/output ports. These include two standard serial, 
an RS-488 general purpose serial port, and a parallel port. The 
user has his choice of a terminal. 

IMS International 

The IMS 5000!S is. at this stage, a fully configured system!" 
Driven by a Z80 microprocessor, it runs under CP/M. MP/M 
(the multiuser version of CP/M) and TurboDOS. another high- 
level operating system. Standard user memory is 64K and disk 
storage is handled by two 409K double-sided, double-density 
5'/fl-inch minifloppy disks. 

Programmable in BASIC, COBOL, Fortran, and Pascal, this 
and other data are input via a typewriter-style keyboard with 64 
typewriter-style keys. There are also 14 special-function keys, 
as well as a separate 19-key numeric pad. Input/output is hand- 
led with a standard serial port so that a user can interface a printer 
or modem for telecommunications. The standard monochrome 
monitor displays 80 characters by 25 lines. 



158 



■ 


1 

Memory.' storage 


Keyboard 


I/O 


Display 


1 

Comments 


1 


192K2 320KDS/OD5VV 
floppy drives 


97 keys, 17-key keypad, 
12 special function 


1 parallel, 1 serial 


12-incfi monoctirome 
CF1T/720 X 300 res., 80 
X 25 display 


2-dnve moriocnrome version, 
memory expanded to 192K 




128K1630K 5 Vi" floppy 

drive 


91 keys, 15 special func- 

iKjn. 18-key keypad 


2 serial; 1 parallel 


12-incfi monochrome 
CRT 80 X 24 text/640 >; 
312graptiics 


1 630K 5 '■.:" drive adaeo 

1 




64K'2 376K DS/DD 5 'A" 
floppy drives 


83 keys, 4 function, 14- 
ke^ keypad 


1 serial, 1 parallel 


9.|ncn CRT, fttiB color av- 
ail./80 X 24 text 


Dasic system 




256K,2 5 Vi" DaOD drives. 
640K 


83 keys, 10- key keypad, 
10 special funct. 


1 parallel, 1 serial 


9-inch monochrome (Duiit- 
in)/80 X 25 text 


IZSK. memory expansion i 




256K/2 320K DS/DD 5 W' 
drives 


59 keys, 10 special func- 
tion, 20-key keypad 


1 parallel, 1 serial 


12-incfj monocfirome/SO x 
25 text 


memory expanded to iiab^ 

1 




256K/2 400K 5 Vi" floppy 

drives 


58 keys, special func- 
tion, 14-key keypad 


1 serial, 1 RS-423 syn- 
chronous 


monochrome CRT/80 x 
25 text 


professional system with 
powerful CPU and operating a 
system 1 




68K/512K of RAM-disk 
storage/l DD 5 W" floppy 
included 


standard 


2 serial, t parallel 


80-character x 4-line liq- 
uid crystal display/external 
CRT connector 


11 KAM-Oisk J 




64K 1 3.5-inch 249K micro- 
drive 


58 keys. 8 special func- 
tions, programmable 
keys 


2 serial. 1 IEEE-488 


9 " or 1 2"-monochrome 
CRT/80 X 25 text 


3.5'inch dnve added 

J 




128K 


57 keys, 10 definable 
functions on 5 keys 


1 serial, 1 multipurpose 
IEEE-488 port 


9" monochrome uh i lao x 
25 text 


base configuration ■ 




128K1 3.5' 280K micro 
floppy drive 


59 keys, 10 function 
keys, 18- key keypad 




monochrome (built-in)/80 
X 24 text 


sort'.vtife pacKage ennanceo j 




32k.1 320K 3" microfloppy 
disk drive 


61 key board, emb«i- 
ded 10- key keypad 


1 senal 


(je-charaaer x H-iine liq- 
uid crystal display/toucfi 
panel 


fuii-feaiufM lap comptiTsr 




128K.2 640K slim line 5 Vi" 

DS,.'DD fiODDV drives 


60 keys. 15 program- 
mable, 18-kev keypad 


1 parallel, 1 serial 


12- inch monochrome/80 x 
25 text mode 


zna dnve aaced lo tvibu 1 




64J02 8-lncfi DS/DD drives 


rot announced 


not announced 


not announced 






64K'1 780K DS.DD 5 '/V 
floppy drive '1 lOI^B hard 

Hi<;l< 


75 keys 


2 serial, 2 parallel 


12-inch monochrome/80 x 
25 text mode 


lyrviD !U)(U 1 v'viiioiitfsief/ uiSK-' 

drive 1 


\ 


128K/2 320KDS/DD5 W 
floppy drives 


98 keys, separate nu- 
meric keypad, 10 
programmable keys 


1 serial, 1 parallel 


80 X 25 text mode/640 x 
200 graphics 


basic system 




128K.2 1MB OS DD 8" 

floppy drives 


81 keys, 5 multifunction, 
10-kev keypad 


1 parallel, 1 serial 


14-inch monochrome 
CRT/80 X 25 text 


storage grows lo 2MfcJ with 8" 
DS/DD drives 


\ 


80K2 1.2MB 8" DS/DD 
floppy drives 


82 keys. 8 program- 
mable keys, 19-key 
keypad 


2 serial. 1 parallel 


12-Inch monochrome/eo 
(40) X 24 text mode 


2nd dnve 



Toshiba 

With entries in several other pricing categories, Toshiba has a 
new entry in this one, the T250-4. Another of the many Z80 8-bil 
systems on the market, it features 64K of user memory. Operat- 
ing under the CP/M operating system, the T250-4 comes with 
two standard 8-inch double-sided, doubie-density floppy-disk 
drives for storage. Information on the display was unavailable at 
press time. 

DEC 

Another of the Digital Equipment small-computer offerings is 
the Professional 325, that uses a proprietary 16-bil microproces- 
sor based on the architecture of the DEC POP- 11 1238. Equipped 
with 256K of user memory, this system has two standard 400K 
5'A-inch minifloppy disks for storage, ll operates under a pro- 
prietary operating system, but CP/M is also available as an 
option. 

Fully configured at this point, the Professional uses a slim- 
line typewriter-style keyboard with a total of 58 typewriter keys. 
This keyboard also features special function keys and a separate 
14-key numeric pad. While the keyboard handles user input, 
output is sent to a high-resolution monochrome display that has 
an 80-character by 25-line display. Inpui/ouiput is handled by a 
standard serial port as well as by an RS-423 synchronous port. 
That port can be used for communications or can interface with a 
larger network. 



Eagle 

The Eagle IIE~4 is another small-computer system that makes 
its appearance here. Actually an upgrade of an already existing 
system, the Eagle HE series, that was introduced in another 
pricing category, the Eagle llE-4 is driven by the same type of 
8-bit Z80A CPU. Operating under CP/M, it has one 780K 
double-sided, double-density minifloppy disk available for stor- 
age. Its other storage medium, also part of the system upgrade, 
is a 10-MB hard disk. 

Programmable in BASIC, this and other data are input via the 
75-key typewriter-style keyboard. Output is to a 12-inch 80- 
character by 25-linc monochrome display screen. Input/output 
is handled by two standard serial and two standard parallel ports, 
so a variety of peripherals can be attached. 

Vector Graphic 

The Vector 4//0 is an 8/16-bit small-computer that makes use 
of co-processors, a Z80B (8-bit) and an 8088 (16-bit). The 
Vector 4/10 runs CP/M-86~the 16-bit version of CP/M— CP/ 
M, with MS-DOS available as an option. 

The standard disk drive is a 630K 5'/j-inch minifloppy unit. 
When this is combined with the standard 128K RAM, it be- 
comes a flexible unit. 

Having a total of 91 typewriter-style keys, the Vector <#//0's 
keyboard also has 15 special-function keys and an 18-key 
numeric pad. User input is via this device and output is to a 



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THE GAVILAN is an IBM workalike lap computer. 

12-inch monochrome video tube that delivers 640 by 312 
graphics or an 80-character by 24-line text display. There are 
two standard serial ports and one standard parallel port. 

Sanyo 

A new Sanyo offering is the MBC4050 16-bit small -computer 
system. Driven by an 8086, 16-bit microprocessor, it has 128K 
of user memory. This amount of memory is enough to handle 
any of the complex ! 6-bit programs available on the market 
today. Unlike other 16-bit systems today, the MBC 4050 relies 
on the CP/M-86 operating system. It could be somewhat limit- 
ing to a computer user because most 16-bit programs are being 
written for MS-DOS. Tht MBC 4050 is equipped with two 640K 
slim-line minifloppy-disk drives for mass storage. 

Programmable in BASIC and assembler, this and other data 
are input via a standard typewriter-style keyboard with 60 type- 
writer keys . There are also 1 5 separate programmable keys and a 
separate 18-key numeric pad. Video output (80 characters by 25 
lines text) is to a standard 1 2-inch monochrome display. Input/ 
output is handled via standard serial and parallel ports. The 
MBC 4050 system is actually an upgrade to the MBC 4000 
small-computer system. It adds a second drive for greater 
storage. 




Computer Devices 

The DOT-SOOOZ is basically an upgraded system at ihis point. 
The key change to this 8088, 16-bit CPU-based 3000Z is an 
enhanced software package. It still has only one 3,5-inch 
microfloppy drive for storage, but it does offer 128K of user 
memory. A transportable, it has 59 typewriter-style keys on the 
main keyboard and eight special-function keys, plus programm- 
able softkeys. Its monochrome display is still a built-in 5'/z by 
9-inch screen. 

Hewlett-Packard 

A new system joins the wide-ranging Hewleit-Packard lineup 
in this price category, the HP200, one of the first small- 
computers in the reasonable-cost market to make use of the 
powerful MC68000 16-bit microprocessor. Thai CPU offers 
seventeen 32-bit registers and can directly address 16 mega- 
bytes. 

This microcomputer uses the powerful multiuser UNIX op- 
erating system, but there is no disk storage indicated at this price 
level. 

Programmable in BASIC, Pascal, and HPL. the system has 
128K of standard user memory. The typewriter-style keyboard 
has 57 keys and 10 definable functions included on five multi- 
function keys. 

In this base configuration, input/output is handled via a stan- 
dard serial port or a multipurpose rEEE-488 general input/output 
port. Both of these ports can be interfaced with a variety of 
peripherals, including printers, plotters, modems, and scientific 
or manufacturing instruments. The standard screen is a 9-inch 
monochrome display that shows 80-characters by 25-lines. 

For the portable HP85A. this upgrade adds a second serial 
port — a general-purpose input/output port— that lets this small- 
computer system be linked to a wide variety of peripheral 
equipment. Meanwhile, the HP85B has its user memory in- 
creased to 160K. That means it can handle more user input and 
far more complex routines and tasks. 

The HP86A, meantime, becomes fully configured with an 
added second 270K 3.5-inch microfloppy-disk drive for mass 
storage. This frees the user from the limitations imposed by only 
having one disk drive. The HP 1201 125 becomes much mote 
versatile with one 248K 3,5-inch microfloppy-disk drive. 

Compaq 

This IBM-compatible transportable small-computer system 
becomes fully configured in this pricing category. With the 
addition of a second 320K double-sided, double-density mini- 
floppy-disk drive, the Compaq gains much more power and 
fiexibility . Its second upgrade gives it even further capability by 
allowing serial communications ability. The optional serial in- 
terface port is now standard and a user can tie in a variety of 
peripherals, including printers, plotters, and modems. 

Its next upgrade adds to its full configuration by adding a full 




THE SAGE II is shown here with some of \tB "big brothers 



OIGrrAL EQUIPMENT COflP.'s computers— ttie Professional Is in canter. 



160 



tL. Jj^V^..'— -; 



1 28K of user memory, thus bringing its standard memory to a 
full 256K. With this much memory, this system can easily 
handle the memory-hungry 16-bit programs available. 

Sony 

The full- featured SMC-70 system becomes even more ver- 
satile with the addition of a 1 2-inch RGB high-resolution color 
monitor. This system now has color-graphics capability. It 
becomes even more flexible in its second expansion with the 
addition of an expansion unit that broadens the range of per- 
ipherals to vi'hich it can be interfaced. 

IBM 

The IBM Personal Computer begins to become rather power- 
ful as it approaches its fullest configuration. In its first change, 
the user memory capacity is increased to 128K on the 
monochrome version. That makes it able to handle just about 
any program on the market. In its second upgrade, the high- 
resolution monochrome display is changed to a high-resolution 
color display. 

With this second upgrade completed, the next upgrade in- 
creases the memory of the color display version of the IBM-Z^C 
to 128K. The final upgrade brings the amount of user memory 
up to 256K. 

Texas Instrumertts 

The one-disk version of the TI Professional Computer gains 
color-graphics capability with the addition of a ! 3-inch color 
monitor. It delivers 720 by 300 resolution. Another version, the 
two-dtive monochrome version, has its tiser memory increased 
to 128K for more capability. 

Tlie last upgrade to the two-drive monochrome TI PC brings 
the amount of user memory up to 1 92K. Although you may think 
this is far too much memory, remember that the new generation 
of memory-hungry 1 6-bit programs requires great amounts of 
memory to function correctly. 

Zenith 

The Z-JQO line becomes more powerful in this region, too. In 
the first expansion to the low-profile unit, a high-resotution 
color monitor is added to enhance the unit".s graphics capability. 
Although this seems unlikely, adding the high-resolution green 
monochrome display increases the cost of the low-profile Z-IOO 
beyond that of the color version. The prices, though, were 
obtained from two different Heath/Zenith sources. 

The last upgrade to this line makes the all-in-one Z-lOO a fully 
configured unit. It adds a second 320K double-sided, double- 
density disk drive to the all-in-one. 

NEC 

The now-dual processor PC-8800 series receives the addition 
of a 14-inch, high-resolution color monitor. 



>.-\ 'i- 




VUgUf 





uampulFi 

$3500-$4000 



Basis 

The Apple/CP/M-compatible Basis 108 system becomes a 
speedier unit with the addition of a 256K virtual -memory disk. 

Athena 

The transportable Athena /. has its standard virtual-memory 
disk expanded to 256K for greater storage polcniial. It means a 
user can now load and use larger programs in this type of 
pseudo-disk system. The second expansion makes this system 
even more powerful as this memory disk is expanded to 5I2K. 

TeleVtdeo 

The memory capacity of the TS 1603 1 6-bit system is ex- 
panded to 256K, the ftiUy configured number for this supple- 
nient. It means this system can use any of the memory-hungry 
16-bit programs now coming to the market very efficiently, 

Apple 

At this stage, the Apple /// becomes fully configured. No 
only does it have a standard display and 256K of memory , but it 
also has a second drive for more flexible system operation. 

Hyperion 

This transportable small-computer system finds its flexibiltty 
increase in this pricing category with the addition of a second 
320K double-sided, double-density minifloppy-disk drive. 

Sord 

The M23 system becomes even more powerful as it upgrades 
to the Mark V G model. In this configuration, the drives are 
upgraded to 8-inch units with I -megabyte of storage potential 
per drive. 

Wang 

The Professional Computer — this company also makes 
one— gains more power and flexibility with the addition of a 
second 360K double-sided, double-density drive. At the same 
time, a high-resolution — 800 by 3t)0 — 'monochrome display and 
its adapter become standard equipment. 

Commodore 

With the addition of dual 5'/*-inch disk drives, the 96K 
SuperPET system becomes fully configured. 

Toshiba 

The T300, now a color-capable computer, becomes even 
more capable with the addition of a second 640K 5'/4-inch 
minifloppy-disk drive. 



I 



Radio Shack w 

The TRS-80 Model 12 business computer becomes even more 3 

powerful and flexibile with the addition of a second 1.2-MB ^ 

8-inch floppy-disk drive. R-E S 

161 







■*!'. 



__« Ri: 







$4000-$4500 



The major change in this 

price range, when compared 

to last year, is the inclusion 

of a hard-disk drive in many 

systems. 



^4^000 to ^4500 



MARC STERN 



to 
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SOMETHING INTERESTINO IS BEGINNING TO OCCUR AT THIS POINT 

in our buyer's guide; tiie Winchester drive is beginning to appear 
more frequently. Also known as the hard disk, this storage 
option was, until a couple of years ago, associated only with 
full-sized mainframe computers or minicomputers. If any were 
available for the small-computer world, they were only avail- 
able on high-end systems costing nearly $10000. 

Now, hard disks are available near the top-end of any afford- 
able computer line. Their cost isn't much greater than the cost of 
a pair of high-density 8-inch floppy-disk drives, but their advan- 
tages are greater. 

These disks are capable of much greater storage potential. 
Where a high-density minifloppy may store up to 700 kilobytes 
of data and an 8-inch floppy may now store over 1 megabyte, the 
smallest hard disk stores 5 megabytes or more of information. 

Perhaps their greatest drawback is backup because it takes a 
great many floppy or minifloppy disks to back up the informa- 
tion on a hard disk. 

In this price category, nine new machines debut and without 
further ado, we'll begin our look at those machines, 

DEC 

The DECmate U is another of the Digital Equipment Small 
Computer offerings that were first unveiled about a year and a 
half ago. 

Driven by a proprietary PDP-8 ! 6-bit microprocessor and a 
Z80 co-processor, the DECmate II features 64K of RAM in this 
configuration. 

Capable of using CP/M-86, MS-DOS or its own proprietary 
operating system, this microcomputer is equipped with two 
standard 400K 5 'A- inch minifloppy-disk drives. 

The slim-line typewriter-like keyboard of the DECmate II has 
58 keys, li also features separate special-function keys and a 
14-key numeric keypad. 



Equipped with a standard serial port, which can be interfaced 
with a wide variety of peripherals, including printers, plotters, 
and modems, the DECmate II also features an RS-423 syn- 
chronous port. This type of port allows this machine to be tied 
into a larger office network and provides high-speed data com- 
munication in this setting. 

User output is via a black-and-white CRT that provides an 
80-character by 25-line text display, 

IMS 

The 5000X16 system is another of the micromainframe sys" 
tems offered by IMS International. A micromainframe is a 
small-computer system that features a system box, two drives, 
and a number of input/output ports. A user has the option of 
interfacing his own terminal, a device that includes a keyboard 
and a display screen. 

Driven by a 16-bit 8088 CPU — the same one used by the IBM 
Personal Computer, this system runs under either MS-DOS or 
CP/M-86. 

This last feature is aiso one worth noting. Since the 16-bit 
microcomputer world seems to be standardizing around MS- 
DOS as the operating system, it makes sense for a microcompu- 
ter manufacturer to offer it. There is a wealth of new. powerful 
software being written for this operating system. At the same 
time, though. Digital Research, which offers CP/M-86, is be- 
coming more aggressive in this field and it is possible another 
body of software will grow under this system. It just gives tlie 
user another "in case" option. 

With 256K of user memory, this system can handle any of the 
new l6-bil programs which might be thrown at it. It can also 
become a multiuser machine with the addition of a hard disk. 

The standard disk drives for the 5000X16 are dual 409K 
double-sided, double-density 5!A-inch minifioppies. 

Widi two standard serial and three parallel ports, there arc 



162 



I 



enough input/output options for a user to interface a number of 
peripherals. Those will likely include, in this case, terminals, 
printers or plotters, and, possibly, a modem. This computer is 
programmable in BASIC, COBOL, Fortran, and Pascal. 

Another IMS offering, the 5000[SI6 is also driven by a 1 6-bit 
8088 CPU, An IBM-workaltke small computer, this system also 
has 256K of RAM. This allows the 50001S16 to easily handle 
any of the sophisticated 16-bit programs now coming to the 
market. In fact, mostof those programs require a minimum of 90 
to 128K of memory for efficient operation. 

Running under either MS-DOS orCP/M-86, a user has access 
to a wide variety of programs. The disk drives are double-sided, 
double-density 409K 5 'A- inch mini floppies. 

Programmable in BASIC, COBOL, Fortran, and Pascal, this 
and other data are arc input via a keyboard containing 64 
separate typewriter-style keys. The keyboard also contains 14 
.special-function keys and a 19- key numeric keypad. 

User output is to a monochrome monitor with an 80-character 
by 24-line text mode display. 

Input/output is handled via a standard serial port to which a 
variety of peripherals can be attached. 

Vector Graphic 

The Vector 4i20 is a new offering from this long-established 
microcomputer manufacturer. 

A co-processor machine, it is driven by an 8-bit Z80B CPU or 
an 8088 16-bit CPU. This gives the user access to the worlds of 
CP/M, CP/M-86 or, optionally, MS-DOS. Standard user mem- 
ory is 128K, 

The Vector 4/20 comes equipped with two standard 630K 
S'A-inch minifloppy-disk drives. 

User input is handled via a typewriter-style keyboard featur- 
ing a total of 91 keys. Included are 1 5 special-function keys and 
an 18-key numeric keypad. 

Output is a 12-inch monochrome display that is capable of 
640- by 312-dot graphics or an 80-character by 24-line text 
display. Other input/output is provided via two standard serial 
ports and a parallel port. 

Durango Systems 

The Durango Poppy computer takes advantage of the power- 
ful 80186 16-bit advanced CPU. 

This advanced CPU, when combined with the 128K of user 
memory, allows use to take advantage of the many sophisticated 
16-bit programs on the market. Since it has a more powerful 
architecture it allows the user to have access to MS-DOS, 
CP/M-86, MP/M-86 and the multiuser, multitasking operating 
system, Xenix. 

Equipped with dual 800K 5'/i-inch minifloppy disks, the 
Poppy has more than enough mass storage for most needs. 

User input is via a keyboard with 64 typewriter-style keys, 
eight special-function keys, and a 14-key keypad. Output is to a 
monochrome CRT with an 80-character by 25-line text display. 

Inpufoutput is handled via standard serial and parallel ports 
that allow the user the ability to interface such peripherals as 
printers, plotters, and modems. 

Eagle 

Two new models debut in this pricing category, the Eagle 
1620 and the Eagle PC-XL. 

The Easle 1620 is driven by a 16-bit 8086 CPU, the big 
brother to the 8088 used by the IBM Personal Computer. It 
comes with 128K of RAM. 

Operating under MS-DOS or CP/M-86, the Eagle 1620 has 
two 780K double-sided, double-density S'/i-inch minifloppy 
disks as standard equipment. 

User input is via a 105-key keyboard and output is to a 
12-inch, high-resolution monochrome display. The display is 
capable of 720- by 352-dot graphics resolution and an 80- 
character by 25-line text mode. 

Input/output is handled via two standard parallel ports and 
two standard serial ports. 



The Eagle PC-XL uses essentially the same mechanical com- 
ponents, but differs in three key areas: CPU. storage, and 
input/output. 

This computer also uses a 1 6-bit CPU, but it is an 8088, rather 
than the slightly faster 8086. 

Further, rather than having two parallel ports and two serial 
ports, it only has one parallel port and two serial ports. 

Finally, this system includes a standard 10 megabyte 
Winchester hard disk. This means this system has much greater 
storage capability and faster data access and retrieval. 

Software is also bundled (included) in this configuration. 

TeleVideo 

A new model appears in this pricing category, the TS-1602G, 
driven by an 8088, 16-bit CPU. This allows the user access to 
the many programs now appearing for this type of device. 

With 128K of RAM memory, the TS-1602G is capable of 
handlingany of those new programs. It runs under either CP/M- 
86 or MS-DOS. The standard disk drives are 2 1 -megabyte 
double-sided, double-density 5'/i-inch minifloppies. 

Programmable in COBOL, this system accepts this and Other 
data input from its 72 typewriter- style keys, 16 programmable 
keys, and a 16-key numeric keypad. Output is to a 14-inch 
monochrome display tube that is capable of an 80-character by 
25-rme text display. Additional I/O is via two standard serial 
ports and one parallel port. 

The 1603H. which uses the same components, is an upgraded 
version of the TS-1603 . In this version , a 1 0-megabyte hard disk 
is added to its configuration for greater storage density. 

Hewlett-Packard 

The HPS58 becomes a more completely configured system in 
this price range with the addition of a serial port. This gives the 
user the option of interfacing this small -computer system with a 
printer or a modem. 

Meanwhile, the HP86A reaches its full configuration with the 
addition of a second disk drive. 

The HP87XM becomes more versatile with the addition of a 
270K 3.5-inch microfloppy disk for storage. 

The change made to the HP120U25 system finds this small- 
computer systein's drives changed to 5 '/j- inches. 

NEC 

The PC-8800 is becoming fully configured at this point. In 
this version, (he PC-8800 is sdll only a CP/M-compatible ma- 
chine and uses dual 8-inch floppy disk drives for storage. The 
upgrade to this version adds a high- re solution coior monitor. 
The 14-inch color display is capable of 640- by 400-dot color 
resolution or an 80-character by 25-line text mode. 

Texas Instruments 

Both the color version of the TI Professional Computer and 
the monochrome version are upgraded. 

The first upgrade to the color version is the addition of a 
second 320K minifloppy-disk drive. 

The second upgrade to that system brings the amount of user 
memory up to 128K. 

The monochrome version reaches its fullest memory 
configuration — for our supplement — with its upgrade to 256K 
of RAM. 

North Star 

The Horhon micromainframe system becomes much more 
powerful widi the addition of a 5-megabyte hard disk. The 
ad vantage of a Wi nchester disk is its rapid data-retrieval capabil- 
ity and its voluminous storage. 

The Advantage also gains much more storage capability with 
the addition of a hard-disk system. 

IBM 

The IBM Personal Computer Teaches its full configuration in 
this price category by having its on-board RAM memory in- 



1 

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TABLE 1— $4000-S4500 

Manufacturer 


Model 


Price 


CPU 


Word Lengtti 


Operating System 


Languages 


4 


L 


Wang Laboratories 


Protessional 
Computer 


S4030 


8086 


16-bit 


MS-DOS, CP/M 
emulation 


BASIC. COBOL, Fonran, 
Fiscal 




■ 


Texas Instruments 


Professional 
Computef 


$4065 


8088 


16-bit 


MS-DOS. CP/ 
M-86, UCSD p- 

Sysilnm 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 




• 

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164 


Texas Instruments 


Professional 
Computer 


S4070 


8088 


16-blt 


MS-DOS, CP/ 

M-ae, UCSD p- 

Svstem 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 


1 


IMS International 


5000X16 


S4100 


3088 


16-bit 


MS-DOS. CP 
M-86 


BASIC, COBOL, Fortran, 
Pascal 




IBM 


IBM-PC 


$4172 


S088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86. UCSD p- 
Sv.'slRm 


COBOL, FORTRAN, 
BASIC, MACRO assembler, 
Pascal 




HewleH-Packard 


HP85B 


$4185 


Not announced 




Proprietary 


BASIC, assembier 




Hewlett-Packard 


HP87XM 


$4195 


Not announced 




UCSD p-Sys- 
tem. CP/M 


BASIC, Pascal, Fortran 


1 


NEC Home Electronics 


PC-8800 


$4196 


zaOA-compatibte 


8-bit 


CPM 


BASIC 




NEC Information Syst. 


ARC 


$4188 


8086 


16-blt 


CP/M-86. MS- 
DOS 


BASIC, COBOL, FOR- 
TRAN, PASCAL, Assem. 




Zenith Data Systems 


ZF-100 


S4198 


8085,8088 


8 16-blt 


CP/M, 2D0S 

(prnptifjt^ryi 


BASIC, COBOL, FORTRAN 




Digital Equipment Corp. 


DECmate II 


$4240 


PDP-8 micro- 
processor, Z80 


8/16-bit 


CP/M-86. MS- 
DOS, Proprie- 
tan/ 


Not announced 


i 


IMS International 


5000IS16 


$4250 


8088 


16-bit 


MS-DOS. CP; 
M-86 


BASIC. COBOL, Fortran, 
Pascal 


1 


Hewlett-Packard 


HP1 20/125 


S4275 


zeoA 


8-bit 


CP/M 


BASIC, assembler 


4 


Hewlett-Packard 


HP86A 


S4320 


Not announced 


8-bit 


UCSD p-Sys- 
tflm CP'M 


BASIC, Pascai, Fortran 




Sord Computer 


M33 Mark V C 


$4330 


Z80A 




Proprietary, CP/ 
M-compatible 


BASIC, Pascal, Fonran 




Computer Devices Inc, 


DOT-3000B 


$4344 


8088 


16-bit 


MS-DOS 


BASIC, Fortran. COBOL, 
Pascal, assfimblfir 




Texas Instruments 


Professional 
Computer 


$4365 


8088 


16-bit 


MS-DOS, CP/ 
M-86, UCSD p- 
System 


Macro Assembler. BASIC, 
COBOL, FORTRAN, Pascal 




Vector Graphic Inc. 


Vector 4 20 


$4395 


Z808, 8088 


8.'16-bit 


CP/M-86. MS- 
DOS (optionai), 

CP'M 


Not anncjunced 




Durango Systems 


Poppy 


$4395 


80186 


16-bit 


MS-DOS, CP/ 
M-86, MP/ 

M-RK Ynniv 


Not announced 


« 


Sage Computer Tech. 

1 


Sage 11 


$4400 


MC68000 


16/32-bit 


UCSD p-Sys- 
tem, CP'M-86K, 
Moduia 2, 
Hyppj-FORTH 


BASIC, Fortran, Pascal, as- 
sembler 


4 


Radio Shack 


TRS-BO Model III 
Desktoo 


S4443 


Z80A 


8-bit 


TRSDOS 


BASIC, COBOL, Fortran, 
Assembler 




Tele Video Systems 


IS 1603H 


S4495 


8088 


16-bit 


MS-DOS, CP 
M-86 


COBOL 




Eagle Computer Inc. 


Eagle 1620 


S4495 


8086 


18-bit 


MS-DOS. CP/ 
M-86 


optional 


1 


Eagle Computer Inc. 


Eagle PC-XL 


$4495 


8088 


16-bit 


CP,M-86, MS- 
DOS 


optional: ^iJH 


Tele Video Systems Inc. 


TS 1602G 


S4495 


8088 


16-bit 


CP/M-86, MS- 
DOS 


COBOL 




North Star Computers 


Horizon 


$4499 


Z80A 


8-bit 


TSS/C (Proprie- 
tary CP/M-like) 


Not announced 


North Star Computers 

I 


Advantage 


$4499 


ZBOA 


8-bit 


CP/M. GDOS 


BASIC, Fortran, COBOL, 
Pascal 

M 


1 





p 


Memory /storage 


Keyboard 


I/O 




Display 


Comments 








128K'2 360KDS/DD5y4' 
floDDV drives 


101 keys, 16 program- 
mabte, 18- key keypad 


1 parallel. 


1 serial 


monochrome CRT/ 800 x 
30O qraphics capabllitv 


-11 


HjH 


■ 


^ 


¥ 


64K..2 320K DS/DD 5 Vi" 
floppy drives 


97 keys. 17-key keypad, 
12 special (unction 


1 parallel, 


1 serial 


13-incii color CRT.' 720 ^ 
scores.. 80 x 25 display 


version 


drive ad 


to color 




256K/2 320K DS/DD S 'A' 
floppy drives 


97 keys, 17-key keypad, 
12 special Junction 


1 parallel, 


1 serial 


12-incti monochrome 
CRT/720 X 300 res., 80 
X 25 disDiav 


■■ 






256K2 409KDSDDhalf- 
heiqhi 6 ■■-' floppy drives 


N'A 


2 serial, 3 parallel 


N'A 


K,,,.V,^ .^-.^ 


:'->main(r 

4^ 


ame 
cdri\ 

arw: 


S' J 


i 


256K/2 320K DS/DD 5 W" 
drives 


59 keys, 10 special (unc- 
tion, 20- key keypad 


1 serial. 1 


parallel 


12-inch high-res, color dis- 
play/80 X 25 texl 




SnaA|| 






1 



^ 



160Ktape drive 'electronic 

(RAM) disk 



128tC'1 270K 3.5-inch 
micro drive 



58 keys. 20-key keypad, 
8 .spficial Junction 



1 serial 



59 keys, 20-key keypad. 
14 special funclion 



multipurpose port 



built-in 5" CRT 255 
graphics, text 



192 



monchrome CRT, 80 x 24 
text 





64K2 1 MB DSDD 8" flop- 
py Oriyes 


81 keys. 5 multifunction, 
10-kev kevpad 


1 parallel, 1 serial 


14.inch color CRT.'640 k 
400 res.; 80 ^ 25 text ■ 




J 


1 


128K/2tMB8.inch half- 
height DS/DD drives 


66 keys. 25-key keypad, 
23 funclion 


1 parallel. 1 serial 


color/640 X 200 mono 
res., 160 x 10016-color, 
320 X 200 4-color 80 x 
25 text 








128K'2 320K DSDD 5 vr 
drives 


77 keys, 16-key keypad. 
13 soeciat function 


2 serial. 1 parallel 


color CRT 640 x 225 
hiqh-res.. 60 x 25 lines 


i;,.,:; :„: :,.,,: ^:il aadei. 


1 1 


1 


64IC2 400K 5 %" floppy 
drives 


58 keys, special func- 
tion, 14- key keypad 


1 serial, 1 RS-423 syn- 
chronous 

• 


monochrome CRT80 x 25 
text 


basic system 


1 




256K'2 409K DS/DD half- 
heiqht 5'''j" flocpv drives 


64 keys, 14 special func- 
tion^ 19-key kevpad 


1 serial 


monochrome CRT'80 >• 
24 te!<! mode 


basic system 




1 


64K/1 248K 5 V*" floppy 
dnve 


58 keys, 8 special func- 
tions, programmable 
kevs 


2 serial, 1 lEEE-4a8 


9- or 12- monochrome 
CRT/80 >c 25 text 




3 




64K'2 270K 5 Vi" drives 


59 keys, 20 -key keypad, 
14 special function 


1 parallel 


9" monochrome CRT/80 - 
25 text 


\ ■ ,M ■-. ':•■ ''■ .\ "i. 1 : ' 






128K/2 IMB 8" drives 


59 keys, 2p-key keypad, 
9 special function 


2 serial, t parallel 


14-inch color CFTT 








128K 2 3,5' 280K micro 
floopv drives 


59 keys. 10 function 
kevs, ie-key keypad 


2 serial 


monochrome (built-in)/80 
X 24 text 


ed 


. 


1 


128K/2 320K DS/DD 5 V*" 
floppy drives 


97 keys. 17-key keypad, 
12 special funcUon 


t parallel, 1 serial 


13-inch color CRT/720 x 
300 res., 80 x 25 display 


i^AW rv..3m.'-M' nAriaA tn 0. 


1 




128K 2 630K 5 Vi " floppy 

drives 


91 keys, 15 special func- 
lion, 18-key keypad 


2 serial, 1 parallel 


12-inch monochrome 
CRT'80 X 24 text 640 -■ 

312 qraphics 


2nd 630K drive 




1 


^2BW2 aoOK 5 Vt" floppy 
disk drives 


64 keys, 8 special (unc- 
tion, 14- key keypad 


1 serial, 1 parallel 


monochrome CRT'80 y 
25 text 


16- bit system 





128K2 640K 5 Vi" floppy 
drives 



NA 



2 serial, 1 RS-488. 1 
parallel 



N A 



storage expands to 1.28Ma 
with second drive 



v~ 


48K;-1 1B4K 5 '/j" floppy 
drive/5MB hard disk 


64 keys, 12-key keypad 


1 parallel, 1 serial 


12-inch monochrome/64 
m) X 16 text mode 


hare afl 




128K1 1MBDS'DD5Vi' 
floppy drive 1 5 '/'." 10MB 
hard di.sk 


72 keys, 16 program- 
mable. 16-key keypad 


2 serial, 1 serial RS-422 

port 


14-inch monochrome.'SO :■■; 
25 text 


hard disk system added to 

7 o . ->^,-, 


1 


128K/2 DS/DD 780K {96 
tpi) 5 '/*" (loppy drives 


105 keys 


2 serial, 2 parallel 


12- inch high -res. mono- 
chrome'720 y- 352 
capability/80 x 25 text 
mode 


base system ,-■ 


I 


128K 1 320K DS'DD 5 Y^" 
floppy drive/1 10MB hard 
disk 


105 keys 


2 serial, 1 parallel 


12-inch high-res. mono- 
chrome'720 x 352 
capability '80 ■'25 text 
mode 


fully configured base system b 


1 


12aK-2 1MB DS/DD 5 'A" 
floppy drives 


72 keys, 16 program- 
mable. 16-kev keypad 


2 serial, 1 serial RS-422 
Dort 


14-inch monochrome/80 x 
25 text 


base system 


t 


64K'1 360K 5 '/.' DS/DD 
floppy 5MB hard disk 


fJ/A 


2 senal, 1 parallel 


N,'A 


rnicromamtrame storage 
grows with addition of 5 MB 



64K/1 360K DS/DD 5 Vi" 49 keys, 14-key keypad. 1 parallel, 1 serial 
(loppy drive/5MB hard disk 15 funclion keys 



12-inch monochrome 
CRT/640 X 240 graphics 
res./80 X 24 text mode 



165 



creased to 256K. This upgrade allows the PC to take efficient 
advantage of the many powerful 16-bit programs now on the 
market. By this point in this system's expansion we have already 
added a color display, I/O pons, disk drives, and all the other 
features necessary to make it a full-featticed system. 

Zenith 

The low-profile Zenith Z-100 becomes a color graphics- 
capable system with the addition of a high-resolution color- 
video display. Capable of a 640- by 225-dot resolution, this 
display is also capable of an 80-character by 25-Iine text mode. 

Sord 

Although the M23 Mark V C small -computer system be^s 
another name at this point, it is actually an upgrade to the overall 
M2S system. At this point, the system has gained dual i- 
megabyte 8-inch floppy-disk drives for storage. This fully con- 
figured system is now aimed more at the business user than the 
home computer hobbyist and the potential 2 megabytes of stor- 
age provide more than enough to meet the needs of most small 
businessmen. 

Radio Shack 

At this point, the Model III system reaches its fullest con- 
figuration with the addition of a 5-megabyte hard disk. This 
same disk can also be added to the Model 4 , whose price is just 
about the same as the Model III. The key advantage to a hard- 
disk system is the increase in data access and storage speed and a 
secondary advantage is the massive storage capabilities of such a 
system. 

Sage 

The micromainframe Sage II has its potential storage capacity 
increased to ! .28 megabytes with the addition of a second 640K 
minifloppy disk. 




Computer Devices 

The DOT-3000B, another variation of the DOT series of 
transportable microcomputers, becomes fully configured at this 
point with the addition of two serial pons and a second disk 
drive. 

The serial ports give this small-computer system input/output 
capability and allow it to be connected to a variety of peripheral 
devices, including printers, plotters, and modems. 

Wang 

In this configuration, the Wang Professional Computer 
reaches its full capability as a color-graphics machine. This 
upgrade involves more than one item and includes the addition 
of a second 360K double-sided, double-density minifloppy-disk 
drive for mass storage; an 800- by 300-dot color-graphics moni- 
tor and the adapter needed to support this monitor. R-E 



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166 




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4610 series - for STD-Bus. 
Three models available. 

4GQ8 series - for Multibus 
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8804 series- for S-1 GO. Seven 
models available. 

4607 -for DEC LSI-11/PDP8- 
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EampubBn[ 

Over $4500 



The machines we'll discuss 

here are the most 

powerful— and the most 

expensive. 




Over IS4500 



MARC STERN 



AT THIS I'OINT IN OUR BUYER S GUIDE, YOU WILL NOTICE MORE 

and more systems with hard — Winchester — disks for storage. 
These devices offer a manyfold increase in data access and 
storage speed. Usually, storage densities begin at a mininuini of 
5-niegabytes and increase rapidly froni there. This is a minimum 
of a fifteenfold increase in data density over a 300K double- 
sided, double-density minilloppy disk. Since hard disks rotate 
much faster than the average minifloppy or even an 8-irch 
floppy, data access time is quicker. This means that you can load 
a program from a hard-disk system much quicker than you can 
load the same program from a tloppy-disk system. 

One of the most attractive features of the hard disk — besides 
its data-storage capability— is that a few of these devices have 
been trimmed down to SVi inches, and arc no larger than the 
minifloppy drives they replace. 

Many new machines make their debut in this category, and 
there are upgrades of existing systems. Most of the new 
machines are from manufacturers we have already discussed in 
earlier sections of this report. So rather than first looking at the 
new machines, we'll look at all the offerings from each manu- 
facturer, and put the new ones at the opening of each set. 

Hewlett-Packartl 

A new machine makes its appearance in this price category, 
the HP200, the top-of-the-line HP small-computer system, for 
our supplement's purposes. Thi.<i system is not only introduced 
here, but also upgrades several times in this category. 

Based on the Motorola MC68000 CPU. this powerful ma- 
chine has 128K of standard user memory. Operating under the 
powerful UNIX multiu.ser operating system, this .system in- 
cludes one 3.5-inch 270K microfloppy-disk drive as standard. 

Programmable in BASIC, Pascal, and HPL. this and other 
data are entered via a keyboard featuring 57 typewriter keys and 
five keys offering a total of 10 definable functions. User output 



is displayed on a standard 9-inch SO-character by 25-Iine 
monochrome display. Other input and output functions are 
handled via a standard serial port or an IEEE-488 general- 
purpose interface port. This second port allows the HP200 to be 
interfaced with a wide variety of test, measurement, scientific, 
and other peripherals. 

This system also upgrades three times in this price realm. In 
its first significant change, the size of the drive increases from 
3.5 inches to the more standard 5'/j-inch drive. The second 
upgrade adds a second 3.5-inch microfioppy-disk drive for 
storage. The third reconfiguration merely changes the size of the 
di!vk drive from a microdrive to a more standard 5'/j-inch unit. 

The HP120/125 upgrades twice in this category. In the first 
upgrade, a second 248K 3.5-inch microfloppy drive is added to 
this system's configuration. The second reconfiguration in- 
creases the size of the disk to a more standard 5 '/i-inch drive. But 
there's no increase in storage. 

The HPS7XM has three changes in its configuration, two of 
which deal with 5'/j-inch drives, and a third that deals with a 
microfloppy drive. Looking at the most important change first, 
the HP87XM gains a second 270K microfioppy-disk drive. 

The two changes involving 5'/;-inch drives merely involve an 
increasing drive size to a more standard size configuration . The 
HPS5B becomes even more versatile when an rEEE-488 port is 
added. It allows the user to interface this small-computer system 
with a number of test, measurement, and manufacturing in- 
struments, as well as other peripherals. 

For the HP86A, the upgrade increases user memory to 1 28 K. 

Texas Instruments 

The Tl Piofcsskmal Computer undergoes four upgrades in 
this price category. In the first upgrade, the color PC has its user 
memory expanded to I92K by adding64Kof RAM. At this level 
a user can configure a portion of that RAM into a pseudo-disk or 



m 

3 

CO 

oa 

01 



167 



TABLE 1— $4500 AND UP 
Manufacturer 


Model 


Price 


CPU 


Word Length Operating Systen* 


1 Languages 


Hewlett-Packard 


HP87XM 


$4515 


Not announced 




UCSD p-Sys- 
tern, CP/M 


BASIC, F^cal, FOFITRAN 


Hewlett-Packard 


H PI 20. 125 


S4550 


Z80A 


8-bit 


CPM 


BASIC; Assembler 


Texas Instruments 


Professional 
Computer 


$4565 


8088 


16-bit 


MS-DOS, 

CP/M-86, UCSD 
p-Svstem 


Macro Ajwembler, BASIC, | 
COBOL, FORTRAN. Pascal jB 


Hewlett-Packard 


HS5B 


S4580 


Not announced 




Proprietary 


BASIC, Assembler 


Docutel/OtivettI Corp. 


M2D 


S4610 


zeooi 


16-t>it 


PCOS (Prof. 
Computer Op- 
erating Sys.l 


BASIC 


Gavilan Computer Corp. 


Gavilan 


S4S90 


8088 


16-bit 


MS-DOS 


BASIC, Pascal 


IMS Internationat 


5000SX 


S4700 


Z80 


8-bit 


CP/M, MP/M 
Turbo DOS 


BASIC. COBOL, FORTRAN, 
Pascal 


NEC Home Electronics 


PC-8800 


$4746 


Z80A-compati- 
ble8086 


8.. 16-bit 


CPM. CP' 
M-86, MS-DOS 


BASIC 


Texas Instruments 


Professional 
Computer 


$4765 


8088 


16-bit 


MS-DOS, 
CP/M-86, UCSD 
p- System 


Macro Assembler, BASIC, 
COBOL, FORTRAN, Pascal 


Hewlett-Packard 


HP86A 


S4770 


Not announced 




UCSD p-Sys- 

tem, CPM 


BASIC. Pascal, FORTRAN 


Hewlett-Packanl 


HP87XM 


$4770 


Not announced 




UCSD p-Sys- 
tem, CP/M 


BASIC, Pascal, FORTRAN 


IMS International 


8000SX 


$4780 


280 


8-bit 


CP.'M. MP/M 
TurboDOS 


BASIC, COBOL, FORTRAN, 
Pascal 


Radio Shack 


TRS-80 Model III 


$4790 


Z80A 


8-bil 


TRSDOS 


BASIC, COBOL, FORTRAN, 
Assembler 


Sony 


SMC-70 


$4820 


Z80A 


8-bit 


CP'M 


BASIC, CB-80. Pilot Pius 


Honeywell, Inc. 


microsystem 
6'10 


$4870 


Proprietary (Micro 
6)/80e6 


16-bil 


Proprietary, 

MS-DOS, 

GP/M-66 


BASIC 


: North Star Computers 


Advantage 8j16 


$4899 


Z80A8088 


8/16-blt 


MS-DOS, 
GDOS 


BASIC. FORTRAN, COBOL. 
Pascal 


Sord Computer 


M68 


$4899 


M68000/ 280A 


8/1 6/32-bit 


Proprietary, 
CP/M-compatibte 


BASIC, Pascal, FORTRAN 


IBCIntegrated Bus. Comp, 


Cadet 


$4925 


Z80 


8-bit 


OASIS. CP M, 
MP.-M, MVT- 
FAMOS 


Not announced 


Computer Devices Inc. 


DOT-3000D 


$4943 


8088 


16-bit 


MS-DOS 


BASIC, FORTRAN. COBOL, 
Pascal, Assemble 



Computer Devices Inc. 



DOT-3D00C 



$4943 8088 



16-bit 



MS-DOS 



BASIC, FORTRAN, COBOL, 
F'ascal. Assembler 



Athena Computer 



Athena I S4950 NSC-800 (lov^- 

power Z80) 



8-bit 



CP/M 



Rasc^ 



to 
O 

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o 

cc 

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o: 



Gavilan Computer Corp. 


Gavilan 


$4970 


8088 


16-bit 


MS-DOS 


BASIC, Pascal 


Hewlett-Packard 


HP120/125 


$4975 


Z80A 


8-bit 


CP/M 


BASIC, Assembler ^^H 


Altos Computer Systems 


ACS8000-15 


$4990 


Z80A 


8-bit 


CPM 


BASIC, COBOL, 
Fortran, SOFTBOL 
Pascal, 


IBM 


IBM-PC XT 


$4995 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FORTRAN, ^ 
BASIC, Macro Assembler ^_^H 
Pascal ^^H 


Ourango Systems 


Poppy 


$4995 


80186 


16-bit 


MS-DOS, CP/ 
M-86, MP/ 
M-86, Xenix 


Not announced 


Toshiba America 


T250-5 


$4996 


zeo 


8-blt 


CP/M 


BASIC 


Columbia Data Products 


1600-4 


$4995 


8088 


16-bit 


MS-DOS 


BASIC. Assembler 


Ithaca Intersyslems 


Encore 


$4995 


zeoB 


6-bit 


CP/M 


Not announced 


Digital Equipment Corp. 


Professional 350 


S4995 


PDP-11/238 
microprocessor 


15-bit 


Proprietary 
CP'M optional 


Not announced 



168 







Memory/Storage 


Keyboard 


I/O 


Display 


Comments 1 




"T2SK/f270K5Vi-drive 


59 keys, 20-key keypad, 
14 special function 


multipurpose port 


r monochrome CFfr/80 x 
25 text 


■'}' ■ 




e4K.'2 3.5-inch 248 
microdrives 


58 keys, 8 special func- 
tions, programmable keys 


2 serial, 1 IEEE-488 


9" or 12" monochrome CRT/ 2nd microdrive added 
80 X 25 text 




192K'2 320K DS/DD 5 '/r 
(loppy dnves 


97 keys, 17-key keypad, 
12 special (unction 


1 parallel, 1 serial 


13-inch color CRT,720 x 
300 res.. 80 x 25 display 


memory expanded to 192K \ 




1 eOK'tape drive electronic 

disk 


56 keys, 20-key keypad, 
8 special function 


1 serial, 1 general pur- 
pose port 


built-in 5'' CMY' 256 x 192 
graphics. 32 x 16 text 


general purpose port 


i 


160K/2 360K 5 '/V (loppy 
drives 


72 keys, 16-key keypad 


t serial. 1 parallel 


12-inch high-res, mono- 
chrame/BO x 25 texl mode 


:■■■■ drtvT5 added, ms . 




32K'2 320K 3" microfloppy 
disk drives 


61 key board, 10-key 
keypad 


1 serial 


66-character x S-line liq- 
uid crystal display 'touch 

panel 


second dnve 




64K/1 409K DS'DD half- 
height 5 V*" drive/6MB hard 
disk 


N/A 


2 serial, 3 parallel 


NM 


micromainframe system 




128K/2 1MBDS/DD8' 
(loppy drives 


81 keys, 5 multifunction, 

10-key keypad 


1 parallel, 1 serial 


14-inch color CRT/640 x 
400 res.;80 x 25 text 


color display added 




256K;2 320K DS/DD 5 'A" 
(loppy drives 


97 keys. 17-key keypad, 
12 special (uncdon 


1 parallel, t serial 


13*inch color CRT/720 x 
300 res., 80 x 25 display 


memdiy expanded to 256K •] 




128K/2 270K 5 '/V' drives 
for storage 


59 keys, 20-key keypad, 
14 Special (unction 


1 parallel 


9" monochrome CRT/80 x 
25 text 


mpmop/ expanded t^; 




128K/2 270K 3.5-inch mi- 
crodrives for storage 


59 keys, 20-key keypad, 
14 special (unction 


multipurpose port 


8' monochrome CRT/80 x 
25 text 






54K2 12MB8'DSDD 
half-height floppy driv- 
es/6f/B hard disk 


hJ'A 


2 serial. 3 parallel 


N.A 


micromainframe system 

1 




4eK2 184K 5 '/=" (loppy 
drives(5f*(1B hard disk 


64 keys, 12-key keypad 


1 paraltet. 1 serial 


12-inch monochrome/64 
(32) X 16 text mode 


harddlsl-: 




64K,2 280K3.5"microflop- 
py/5.7fv(B hard disk 


72 keys, keypad, 9 
special function 


1 parallel, 1 serial 


12-inch green CRT'80 x 
25te)ct 


hard disk and inlerface unit g 
added, 1 microdrive deleted | 




128K/1 5 '//floppy disk 
drive 


standard, keypad, 
(unction keys 


2 serial, 1 parallel 


12-inch monochrome CH 1 


baste system 


1 


128K,1 360K DS-DD 5 yV 
floppy drive/SfvlB hard disk 


49 keys, 14- key keypad, 
15 function keys 


1 parallel, 1 serial 


12- inch monochrome 
CRT/640 X 240 graphics 
r6s.'80 X 24 text mode 


5MB hard disk 




2S6K/2 1.2ftfl 5 Vt- drives 


Typev^iler style, 
keypad, function keys 


2 serial, 1 parallel, 1 
lEEE-488 


12-inch green CFTT/aO x 
25 


base configuration 




64K-1 1MB floppy disk 
drive 


N.A 


Not announced 


NA 


micromaintrame system 



2S6K/2 3.5" 280K micro 
(loppy drives 



59 keys, 10 (unction 
keys, 18-kev keypad 



2 serial 



monochrome (built-ln)/80 

X 24 text 256K 



128K2 3.5" 2S0K micro 

(loppy drives 



59 keys, 10 function 
keys. 18-key keypad 



2 serial 



monochrome {built-in)'80 tnlegral printer, 128K memory ' 
X 24 text 



2 serial, 1 parallel 80-character x 4-llne liq- 1MB RAM-disk 

uid crystal display/external 
CRT connector 



68K/1MBo(RA!Wdtsk stor- 
age/1 DD 5 Vi" (loppy 
included 



standard 



96K 2 320K 3" microfloppy 
disk drives 



61 key tx)ard, embed- 
ded 10-key keypad 



1 serial 



66-character x 8-line liq- 
uid crystal dispiay'touch 

panel 



64K memory added 



64K'2 248K 5 'A" drives 



58 keys, 6 special (unc- 
tions, programmable 
keys 



2 serial, 1 IEEE-488 



9" or 12" monochrome 
CRT/eo X 25 texl 



208K 2 500K SS. DD (lop- 
py drives 



N,'A 



6 serial, 1 parallel 



N A 



m:icromain(rame 



128K/1 DS/DD 5 Vj" )|oppy 
drive/IOf^B hard disk 



59 keys, 10 special func- 1 parallel 
(ion, 20-key keypad 



basic system 



256K 2 BOOK 5 VV floppy 
disk drives 


64 keys, 8 special func- 
tion, 14-key keypad 


1 serial, 1 parallel 


monochrome CRTBO x 
25tffirt 


256K 


i 


64K/l8-inchDS'Db drive, 
1 SfVlB hard disk 


not announced 


not announced 


not announced 


hard disk added ~ 




128K'1 320K 5 >i' floppy 
disk drive'12(vlB hard disk 


83 keys, 10 special func- 
tion, keypad 


2 serial, 1 parallel 


12-inch monochrome 
CRT/80 X 25 text 


hard disk added (or greater 
siorage 


3 


128fC2 SS/DO 5 '.-i" floppy 
disk drives 


N/A 


Not announced 


N'A 


micromaintrame system 


d 

CD 

m 


256K/1 400K 5 14" floppy 
drive 


58 keys, special (unc- 
tion, 14-key keypad 


1 serial, 1 RS-423 syn- 
chronous 


monochrome CRT'80 x 
25 text 


system box enlarged for haiLi 
disk 


33 


m 










S 



169 



'TABLE 1— $4500 AND UP (continued) 
Manufacturer Model 



Price CPU 



Sanyo 



M8C 3000 



Word Length Ope rati nff System Languages 



$4995 Z80A 



8-bit 



CP/M, TS-DOS 



BASiC, Pascal. FORTRAN, 
Macro-80 • 



Giftord Systems 



100 



$4995 80858088 



8 16-bJt 



CP-M. CP.M-86 Not announced 



Radio Shack 



Model 16 



$4999 MC68000/Z80A 8'16/32-btt Proprietary 



Assembly 



TeleVideo Systems Inc. 



TS 1602G 



$5090 8088 



16-bit 



CP M-86. MS- 
DOS 



COBOL 



IMS International 



I5000SX 



$5090 Z80 



B-bit 



CP/M, MPM 
TurboDOS 



BASiC. COBOL, FORTRAN, 
Pascal 



IMS International 



5000IS 



S5100 Z80 



8-bit 



CP M. MP M 

TurboDOS 



BASIC. COBOL, FORTRAN, 

Pascal 



Apple Computer 



Apple 111 



$5164 6502B 



B-bit 



Apple SOS 



BASIC, Pascal 



Hewiett-Paclfard 



HP200 



$5185 MC68000 



16,'32-bit 



UNIX 



BASIC, Pascal, HPL 



Hewlett-Packard 



HP87XM 



S5225 Not announced 



UCSD p-Sys- 
tem, CP/M 



BASIC, Pascal, FORTRAN 



Gavllan Computer Corp. Gavilan 



$5240 8088 



16-bit 



MS-DOS 



BASIC, Pascal 



Canon USA 



AS100 



$5245 S086 



16-bit 



MS-DOS. CP/ 
M-86 



BASIC, COBOL 



Sony 




SMC-70 



$5340 Z80A 



8-bit 



CP/M 



BASIC, CB-80, Pilot Plus 



Apple Computer 



.pple 111 



$5364 65021 



Apple SOS 



BASIC, Pascal 



Columbia Data Products 



1600-4 



$5440 8088 



16-bit 



MS-DOS 



BASIC, assembler 



NEC InformatEon Syst. 



APC 



$6446 3086 



16-bit 



CP/M-86. MS- 
DOS 



BASIC, COBOL. FOR- 
TRAN. PASCAL. Asgem, 



IMS International 



5000tS 



$5490 Z80 



8-bit 



CP,M, MP/M 
TurboDOS 



BASIC, COBOL. FORTRAN. 
Pascal 



Texas Instruments 



Professional $5490 8083'; 
Computer 



mm 



MS-DOS, CP/ 
M-86, UCSD p- 
Svstem 



Macro Assembler, BASIC. 
COBOL, FORTRAN, Pascal 



Altos Computer Systems 5-5D 



$5490 Z80A 



8-bit 



CP;M 



BASIC. COBOL, Pascal, 
FORTRAN. SQFTBOL 



CompuPro Division 



System 816/A S5495 8035/8088 



8/16-bit 



CP/M. CP/M-86 Not announced 



Vector Graphic Inc. 



Vector 4/30 



$5495 Z80B,8088 



ai6-bit 



CP/M-86, MS- 
DOS (optional), 
CP/M 



Not announced 



Zenith Data Systems ZF-100 



$5499 8OB5/3088 



8/16-bit 



CP/M/ZDOS 
(proprietary) 



BASIC. COBOL, FORTRAN 



IMS International 



5000X16 



$5500 8088 



16-bit 



MS-DOS, CP, 
M-86 



BASIC, COBOL, FORTRAN, 
i^^cal 



Hewlett-Packard 



HP200 



$5505 MC68000 



16/32-bit 



UNIX 



BASIC, Pascal, HPL 



Computer Devices Inc. 



DOT-3000E 



S5542 8088 



16-bit MS-DOS BASIC, Fortran, COBOL, 
^ Pascal, assembler 



IMS international 



GIfford Systems 



8000X16 



$5580 S0S8 



16-bit 



100 + 



$5595 80858088 



816-bit 



MS-DOS, CP/ 
M-86 



CP M, CP/M-86 Not announced 



BASIC. COBOL, FORTRAN. S 
Pascal S 



Zenith Data Systems 



Z-120 



$5599 8035'808e 



8'16-bil 



CP/M/ZDOS 
(proprietary) 



BASIC, COBOL, FORTRAN 



g 

z 
O 

DC 

H 
O 

lu 

_j 

UJ 

6 

i 

1TO 



Zenith Data Systems 


ZF-100 


$5638 


8085.8088 


a 16-bit 


CPMZDOS 

{proprietary) 


BASIC. COBOL, FORTRAN 


IMS International 


5000IS16 


$5650 


8038 


16-bJt 


MS-DOS, CP/ 
M-86 


BASIC. COBOL. FORTRAN, 
Pascal 


IBM 


IBM-PC XT 


$5675 


8088 


16-bit 


PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 
System 


COBOL, FORTRAN, 
BASIC, Macro Assembler, 
Pascal 


Hewlett-Packard 


HP200 


S5760 


MC68000 


16/32-bit 


UNIX 


BASIC. Pascal, HPL -■' 


^ 





Memory/Storage 


Keyboard 


I/O 


Display 


Comments 




64K/2 8" DS/DD drives. 
1MB per drive 


59 keys, 22 program- 
mable, 18- key keypad 


2 serial, 1 parallel 


12-inch monochrome/so x 
25 text mode 


basic system 'jj 




64K.21.2MB8"DS.DD8" 
floppy drives 


N.A 


1 serial 


user option 


micromainframe 




128K.'1 .25MB 8" (loppy 
disk 


76 keys, numeric 
keypad 


2 serial, 1 parallel 


1 2" green monochrome, 
80 X 24 text 


basic system 




256K21MBDS-DD5yV' 
floppy drives 


72 keys, 16 program- 
mable, 16-kev keypad 


2 serial, 1 serial RS-422 
port 


14-inch monochrome/80 x 
25te)ct 


256K memory added 




64tC'2 409K DS/DD half- 
lieigh! 5 'A" floppy driv- 
es/6MB hard disk 


N/A «||||m« 


2 serial, 3 parallel 


N/A ^BHMjji 


second floppy drive added 




64K 1 409K DS DD floppy 
drive,6MB hard disk 


64 keys, 14 special func- 
tion, 19-key keypad 


1 serial 


monochrome CRT/80 x 
24 text mode 


storage increased with addi- 
tion of 6MB hard disk 


p 


IZatW 140K SS/DD 5 y-'' 
floppy driveftiard disk drive 


61-ttey typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler, 1 parBilel 


12-inch CRT/280 x 
192/560 X 192 graphics 
cap./80 X 24 text 


hard disk {WirK^ester drive) 
added to 128K Apple 111 




128K1 3.5-incn 270K mi- 
crofloppy drive 


5? keys. 10 definable 
functions on 5 keys 


1 serial, 1 multipurpose 
IEEE-488 port 


9" monochrome CRT/80 x 
25 text 


3,5-ifich microfloppy added 




128K/2 270k 5 '/4' drives 


59 keys, 20-key keypad. 
14 special function 


multipurpose port 


r monochrome CRT/80 x 
25 text 


2nd 5 "A-inch drive added 




l60K.'2 320K3'"mlcro(iop- 
py disk drives 


61 keyboard, embed- 
ded 10- key keypad 


1 serial 


66-character x a-line liq- 
uid crystal display/touch 
panel 


128K of user memory added 


• 


Not announcecf/2 640K 
DS/DD 5 '/i" floppy driv- 
es»'2 8" ((oppies 


standard 


1 serial, 1 parallel 


monochrome display/80 x 
25 text mode 


2 eight- inch floppy drives 




64K 1 280K 3.5' microflop- 
py 5.7MB hard disk 


72 keys, keypad, 9 
special function 


1 parallel, 1 serial 


12-inch RGB high-res. 
color CRT 


color CRT subsituled for dis- 
play 




256K'1 UOK SS/DD 5 '/*" 
floppy drive/hard disk drive 


61 -key typewriter, 13-key 
keypad, 2 program- 
mable 


1 serial, 2 game control- 
ler. 1 parallel 


12-Inch CRT/280 x 
192/560 X 192 graphics 
cafx/80 X 24 text 


hard disk {Winchester drive) 
added to 25eK Apple III 




256K1 320K 5 V." floppy 
disk drive. 12MB hard disk 


83 keys, 10 special func- 
tion, keypad 


2 serial, 1 parallel 


12-inch monochrome 
CRT/80 X 25 text 


user memory increase to 
256K 




128IC1MB, hall-height DS/ 
DD drive, 10MB hard disk 


66 keys, 25-key keypad, 
23 function 


1 parallel, 1 serial 


monochrome/eo x 25 text 


hard disk added to 1 drive 
nwnochrome mode 


k 


64K'2 409K DS 'DD half- 
height 5 W floppy driv- 
es'6MB hard disk 


64 keys, 14 special func- 
tion, 19-key keypad 


1 serial 


monochrome CRT/80 x 
24 text mode 


2nd DS/DD floppy drive add- 
ed 




256K1 320K 5 W DS/DD 
drive'SMB hard disk 


97 keys, 17- key keypad. 
12 special function 


1 parallel, 1 serial 


12-inch monochrome 
CRT/720 X 300 res., 80 
X 25 display 


hard disk added lo mono- 
chrome unit 




192K1 1MB DS/DD 5 V/' 

floppy 


N/A 


4 serial, 1 parallel 


N/A 


micromainframe 




128K;'2 8-inch floppy driv- 
es, 2.4MB storage 


N/A 


4 serial, 1 parallel 


user option 


micromainframe 


► 


128K 1 630K 5 W floppy 
drive/5 MB hard disk drive 


91 keys, 15 special func- 
tion, 18-key keypad 


2 serial, 1 parallel 


12-inch monochrome 
CRT/80 X 24 text/640 x 
312 graphics 


hard (Winchester) disk 




192K/1 320K DS/DD 5 'A 
drive/11.3 MB hard disk 


77 keys, 18-key keypad, 
13 special funct. 


2 serial, 1 parallel 


user option 


memory IncreiMMBHHM 

and hard disk alHH^^H 
flop;., ■■■ ' 




256K/1 409K DS'DD half- 
height floppy drive/6MB 
hard disk 


N/A 


2 serial, 3 parallel 


N/A 


micromainframe 


1 


128K(1 270K5Vi"drive 


57 keys. 10 definable 
functions on 5 keys 


1 serial, 1 multipurpose 
IEEE-488 port 


9" monochrome CRT/80 x 
25 text 


drive changed lo 5 V<" 




256K 2 3.5" 280K micro 
fioppv drives 


59 keys, 10 function 
keys, 18-key keypad 


2 serial 


monochrome {bu!lt-in)/80 
X 24 text 


266K memory, printer in- 
cluded 


1 


256IC'2 1.2MB 8" DS.-DD 
half-heiqht drives 


t^A 


2 serial, 3 parallel 


N/A 


micromainframe 




128K21,2MB8"DS/DD8" 
floppy drives 


N/A 


1 serial 


user option 


memory capacity increased 
to 128K 




192K/1 320K DS/DD 5 'A 
drive/11.3 MB hard disk 


77 keys, 18-key keypad, 
13 special funct. 


2 serial, 1 parallel 


built-tn monochrome 
CRT/80 X 25 ieni 


hard disk, 92K ol memory 
added, 1 1toppy deleted 



192K'1 320K DS DD 5 'A 
drive/11.3 MB hard disk 



256K/1 409K DS/DD half- 
height 5 'A" floppy drive/6 
MB hard disk 



77 keys, 18-key keypad, 
13 special funct. 



2 serial, 1 parallel 



green monochrome 
CRT/80 X 25 text 



monochrome CRT added 



54 keys, 14 special lunc- 
tion, 19-key keypad 



1 serial 



monochrome CRT/80 x 
24 text mode 



t\anJ disk added 



I 



128K1 DSDD 5 VV floppy 
drive/IOMB hard disk 



59 keys, 10 special func- 
tion, 20- key keypad 



1 serial, 1 parallel 



12-inch monochrome/80 x monochrome CRT 
25 text 



57 keys, 10 definable 
functions on 5 keys 



1 serial, 1 multipurpose 
IEEE-4B8 port 



9" CRT/aO X 25 text 



m 

33 



S 



128K/2 3.5-inch 270K mt- 
crofloppy drives 



2nd 3.5-tnch microfloppy add- 
ed 



17t 



IfTABLE 1— S4SO0 AND UP (continued) 



S^nufacUjrer 
IMS International 



-Radio Shack 



Model 



Price CPU 



80MSX 



S5780 280 



Word Length Operating System Languag es 



8-trit 



CP/M, MP.'M 
TurtxiDOS 



BASIC. COBOL, FORTRAN. 
Pascal 



Mociii! 16 



S5798 MC68000Z80A 8'16'32-bit Proprietary 



assembly 



Sony 



SMC-70 



$5820 ZSOA 



8-bit 



CP-M 



BASIC, 08-80, Ptiot Plus 



Giftord Systems 
IMS Intematfohal 



lOf) 



5000X16 



$5870 00858088 



S5890 8088 



8 t6-bit 



CPM. CP'M-ae Not announced 



16-bfl 



MS-DOS, CP/ 
M-86 



BASIC, COBOL, FORTRAN, 
Pascal 



IBM 



Canon USA 



IBM-PC XT 



S5919 8086 



a\SU)0 



$Sg45 8088 



U3-bi! PC-DOS {MS- COBOL. FORTRAN. 

DOS), CP.' BASIC, Macro Assembler, , 

M-86, UCSD p- Pascal M 

System * 



16-bit 



MS-DOS. CP' 

M-ee 



BASIC. COBOL 



bFujitsu Microelectronics Micro 16 



$5990 Z80A/8086 



816-bil CPM-86, Con- Not announced 

current CP/M/ 
MS-DOS op- 
tional 



North Star Computers 



Advantage 



IBM-PC XT 



$5999 ZaOA 
S6005 8088 



8-b)( 



16-bit 



CP/M, GDOS 



BASIC, FORTRAN, COBOL. 
Pascal 



IMS Iniernationa) 



5000IS16 



16-bit 



PC-DOS (MS- 
DOS), CP/ 
M-86, UCSD p- 

Sysiem 



COBOL. FORTRAN, 
BASIC. MACRO assembler, 
Pascal 



MS-DOS, CP/ 
M-86 



BASIC, COBOL, FORTRAN, 



Gifford Systems 



too 



S6470 8085-8088 



Fujitsu Microelectronics Micro 16 



$6490 ZeOABOBS 



816-bit 

"a 



CP/M. CP M-86 Not announced 



CP^M-ee, Con- 
current CP/M, 
MS-DOS op- 
tional 



Not announced 



1 



Vector GriipKIc Inc. 


Vector 4/40 


$5995 


Z80B/808e 


ane-bii 


CP/M-86, MS- 
DOS (optional), 
CP/M 


Not announced V 


IDurango Systems 


Poppy 


S5995 


80186 


16 ">; 


MS-DOS. CP 

M-86, MP 
M-86, Xenix 


Not announced 


Tele Video Systems Inc. 


TS 802H 


$5995 


ZSOA 


8-bit 


CP/M 


COBOL M 


North Star Computers 


Hodzon 


S5999 


ZSOA 


8-bit 


TSS C (Proprie- 
tary CPM-like) 


Not announced 



J 



\ 



Texas Instruments 


C!.irt;[.'L.:tr 


■') n a 1 


S6185 


8088 


16-bit 


MS-DOS. CP 

W-86. UCSD p- 
Svsrerii 


Macro Assembler. BASIC, 

COBOL. FORTRAN, Pascal 


J 


Zenith Data Systema 


z-100 




$6198 


e085.'80B8 


ens-bit 


CP'M'ZDOS 
(oroprletary) 


BASIC, COBOL, FORTFIAN 


1 


Hewlett-Paci<ard 


HP200 




S6215 


MC68000 


16 32-l5it 


UNIX 


BASIC. Pascal. HPL 


i 


Sony 


SMC-70 




$6340 


Z80A 


8-bil 


CP/M 


BASIC, CB-80, Pilot Plus 


■ 


Honeywell, Inc. 


m(croSy 
6/10 


stem 


$6370 


Proprietary (Micro 
6)/8086 


16-bil 


Proprietary, 
MS-DOS, CP/ 
M-86 


BASIC 


4 


Wang Laboratories 


Professional 
Computer 


$6400 


80S6 


16-b(l 


MS-DOS, CP/M 
emulation 


BASIC, COBOL. FORTRAN 
Pascal 


1 



« 
o 

z 
o 

CE 

I- 

o 

LU 

g 
o 
< 

cr 



virtual-nicmoi7 disk, provided (lie system has the proper soft- 
ware. A greater part of this report was written with the assist of 
such a "disk." 

The second upgrade brings the Pd user memory lo 256K. 
The third upgrdde to this sy.stcm involves the monochrome PC. 
At this stage it reaches its maximum configuration, for our 
purposes, witli the addition of a 5-megabyic haid-disk drive. 
Tt;is provides the user with denser storage and truly high-speed 



data access, storage and letrievaJ. The final change brings the 
color PC up to its fullcit configuralton with the addition of the 
5-megabyte 5'/i-inch hard-disk drive. 

Zenith 

Zenith has four system configuration changes here. With the 
first, the user memory of the ZF-IOO low-profile small- 
computer system increases to 192K and, at the same lime, the 



172 



^^^^^^m^^BHi[iniiiimiiii^^^mii^^^B 




Memory /Storage 


Keyboard 


I/O 


Display 


Comments |^^^^| 




64K'ii.SMB8"0S/0t) 
ha If -height Hoppy 
drive/6MB hard disk 


N/A 


2 serial, 3 parallel 


N/A 


6MB hard disk ^^^| 


ft^ 


12§K.slim-line 1.25MB 8- 
inch floppy disks 


76 keys, numeric key- 
pad 


2 serial. 1 parallel 


12-inch green mono- 
chrome 'BO :< 24 text 


2nd drive '^^^H 


64K/1 280K 3.5" microflop- 
py/12.1 MB hard disk 


72 keyis, Keypad, 9 
special function 


1 parallel, 1 senal 


12-inch green UH 1/80 x 
25 text 


fl 




64K2 1.2MB8'DS'DD8" 

floppy drives 


N/A 


1 serial 


standard terminal 


micromainframe with user ^^ 
Icrmmal attached H 




256K/2 409K DS/DD half- 
height floppy dhves/6MB 
hard disk 


N/A 


2 serial, 3 parallel 


N/A 


jH 


i 


128K1 DS/DD 5 ://' floppy 
drive.'10MB hard disk 


59 keys, 10 special func- 
tion, 20 -key keypad 


1 serial, 1 parallel 


12-inch high-res. color dis- 
play.'BO X 25 text 


;d adapter ^j^^^l 


¥ 


Not announced/2 640K 
DS/DD 5 Vt" floppy driv- 
es/2 8" floppies 


standard 


1 senal, 1 parallel 


640 X 4t)0 color graphics 
capability 


J 


1 


128K'2 320K DS/DD 5 %" 
floppy drives/20tylB 5 Vi" 

hard disl< 


98 keys, separate nu- 
meric keypad, 10 
programmable keys 


1 senal, 1 parallel 


80 X 25 text mode.'640 ■; 
200 graphics 


J^^^^^^l 


!■- 


128K/1 630K 5 '/." floppy 
drive/IOHflB hard disk drive 


91 keys, 15 special func- 
tion, 18-key keypad 


2 serial, 1 parallel 


12- inch monochrome 
CRT/80 X 24 texl/640 x 
312 graphics 


^.^^H 




128K1 800K 5 'A" floppy 
disk drive'lOlylB hard disk 


64 keys, 8 special func- 
tion. 14-key keypad 


1 serial, 1 parallel 


monochrome tRl '80 x 
25 text 


hard disk added j^^^H 


^ 


64K/1 368K 5 V*" DS/DD 
floppy drive/9.6MB hard 
disk 


72 keys, 16 program- 
mable, 17-key keypad 


2 serial, 1 serial RS-422 
port 


14 -inch monochrome/80 x 
25 text 


9 




64K'1 SeiiK 5 '/V' DS/DD 
floppy'lBMB hard disk 


N.A 


2 serial, 1 parallel 


N.A 


15MB hard disk ^^^| 


1 


64K;1 360K DS/DD 5 W' 
floppy drive/1 6MB hard 
disk 


49 keys, 14-key keypad, 
15 funclion keys 


1 parallel, 1 serial 


12-inch monochrome 
CHT/640 ;< 240 graphics 
res..'80 x 24 text mode 


fl 


1 


256K/1 DS/DD 5 '/:=" floppy 
drive/10MB hard disk 


59 keys, 10 special func- 
tion, 20-key keypad 


1 serial, 1 parallel 


12-inch monochrome '80 >= 
25 text 


n......^:^.-:- '-..., « 


"^ 


256K/a 409K DS/DD half- 
height floppy drives/SMB 
hard disk 


64 keys. 14 special func- 
tion, 19 -key keypad 


1 serial 


monochrome CRT/80 x 
24 text mode 


fl 




256K'1 320K 5 'A" DS/OD 
drive.'SfdB hard disk 


97 keys, 17-key keypad, 
12 special function 


1 parallel. 1 serial 


13-inch color CRT 720 ■ 
300 res., 80 ;< 25 display 


' to color unit |^^^H 




1d2K/1 S2(iK tJS/DD S V4 
drlve/11.3 MB hard disk 


77 keys, ia-key keypad, 
13 special funct. 


2 serial, 1 parallel 


high-res. cotorGHT/80 x 
25 text mode 


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l2aK'3 270K £ 'V drives 


59 keys, 20-key keypad, 
14 special function 


1 serial. 1 multipurpose 
IEEE-488 port 


9" monochrome CRT '80 ;■; 
25 text 


^H 




64K/1 280K 3.5" microflop- 
py/12.1 MB hard disk 


72 keys, keypad, 9 
special function 


1 parallel, 1 serial 


12-inch RGB high-res. 
color CRT 


^^^^1 


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128K'2 5 VJ" floppy disk 
drives 


standard, keypad, 
function keys 


2 serial, 1 parallel 


12-inch monochrome Cki 


second hi'Slvcji.:u:;>' ^i^r. o^^^l 




128K'1 360K DS/DD 5 Va" 
fioppy drive/1 lOiWB hard 
disk 


101 keys, 16 program- 
mable, 18-key keypad 


1 parallel, 1 seria! 


monochrome CRT/grapti- 
ics capability 


^^H 


128K'2 1.2MB8'DS/DD8" 

floppv drives 


N/A 


1 serial 


standard terminal 


^H 


1 


1MB/2 320KDS/DD5'A" 
floppy drives 


98 keys, separate nu- 
meric keypad, 10 
programmable keys 


1 serial, 1 parallel 


80 X 25 text mode/640 x 
200 graphics 


rnofv s:<Dan;'t ;: -^^^H 












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second rnininoppy drive is swapped for an 1 1 .3-megabyte hard- 
disk drive, with all its advantages. The all-in-one Z-J20 sy.siem 
al.so has the same changes in the second reconfigunition, while 
the low-profile system gains a higii-re.<>olution monochrome 
display in the third change to the modek of this system. 

The low-profile, moncKhrome hard-disk ZF-lOO reaches its 
fullest configuration and capability as a color graphics-capable 
system by adding a 640- by 225-dot high-resolution color moni- 



tor. This display handles an 80-characlcr by 25-line text mode. 

IBM 

A new version of the IBM Personal Compuwr debuts in this 
price category, the PC-XT (Extended). Having the same es- 
sential specifications as the standard IBM fC— 8088 CPU. 
PC-DOS, double-sided, double-density minifioppy-disk drive, 
59 typewriter-style keys, 10 special-function keys and numeric 



O 
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CD 

m 

23 

CO 

173 



keypad — the new system differs in Ivvo key areas. First is ihat 
the aiuaunt of user memory is doubled from 64K to a standard 
128K. The second change is an added standard 10-megabyte 
5'/j-)nch hard-disk drive. 

This sysiein also has three configuration changes in this price 
range. The first one involves adding a high-resolution 
monochrome green display to the PC-XT. This monitor delivers 
a flicker-free detailed te.tt display and is ideal for serious word- 
processing. In its next change, the A'T becomes a color-graphics 
machine with the addition of a color adapter card and a high- 
resolution 12-inch color monitor. The final expansion of this 
system brings the user memory up to 256K. 

Apple 

The 1 28K version of the Apple III becomes a far more ver- 
satile system with an added hard-disk drive. This gives the user 
higher-density, high-speed data storage and access. The last 
change to this system brings it to its full configuration. The 
256K version of the Apple 111 includes a hard disk. 

Computer Devices 

The DOT-3000 series has several changes in this price cate- 
gory. The [BM-compatible transportable DOT-3000O adds 
RAM for a total of 256K. 

The transportable DOT-3000C. retains the standard 128K 
user memory configuration, and becomes more versatile as the 
optional built-in printercapability is used and a printer is added. 
At once, a user has a complete system at his fingertips that can 
close up and travel with him. 

The final version of this system, the DOT-3000E, brings both 
features together. The user memory is expanded to 256K, and 
the printer is also included. 

Gavllan 

The innovative, IBM-compatible, 8088-driven Cavilan lap- 
computer system upgrades three times in this price range. In its 
first upgrade, this system becomes more versatile and flexible 
by adding a second 320K .Vinch microfloppy-disk drive. The 
second upgrade gives the user 96K of RAM by adding a 64K 
RAM memory add-on cartridge. When this is combined with the 
dual disk drives now included, this system becomes a truly 
versatile lap machine. In its final upgrade, memory capacity is 
increased to 160K. 

IMS International 

This microcomputer manufacturer has a variety of new 
machines debuting, as well as others that upgrade, in this price 
category. The micromainframe 5000SX system, driven by an 




< 
q: 

174 



Tl's PROFESSIONAL COMPUTER gains a RAM disk In this price range. 



8-bit ZHO microprocessor, debuts with a 6-megabyte hard-disk 
system, Inmiediatcly, this increases the versatility of the sys- 
lem, which also hasWK of R.AM. The standard minifloppy-disk 
drive for this system is a 40yK, hatf-heighi double-sided, 
double-density unit. 

Capable of operating under CP'M. MP'M (the multiuser 
version) or TurboDOS, this system is programmable in BASIC, 
COBOL. Fortran, or Pascal. Since it is a micromainframe 
system, terminal choice is up to the user. However, this system 
can also support a variety of input/output devices through two 
.standard .serial ptiris and three standard parallel ports. The 
system upgrades once in this category with an added second 
409K half-height minifloppy drive. This makes backing up the 
contents of the hard disk far easier. 

The SOOOSX is another version of this micromainframe .sys- 
tem and shares many of the same features with the SOOOSX. The 
key difference is in the amount of floppy-disk storage. Instead of 
relying on minifloppy-disks, this system u.ses half-height. 8- 
inch fioppy-disk drives for storage. Their capacity is 1.2- 
megabytes per drive and offer the user up to 2.4-megabytes of 
potential storage. 

in this system's upgrade, the second floppy disk is replaced 
by a 6-megabyte hard-disk drive. This gives the user access to 
high-density, high-speed data access and retrieval. The Z80- 
based 5000 IS system upgrades in this price realm, too. This 
system, which operates under CP/M. MP/M. and TurboDOS 
and is programmable in BASIC, COBOL, Fortran, and Pascal, 
gains a 6-megabyte hard disk. 

Also added to the configuration of the 5000IS- — which has a 
keyboard containing 64 keys, 14 special-function keys, and a 
19- key numeric keypad and a serial port, plus64K of RAM, and 
a monochrome CRT — is a .second 409K double-sided, double- 
density, half-height minifloppy, disk drive. It is in addition to 
the already-exi.sting minifloppy and hard-disk drives. 

The 16-bit R088-based version of the 5000 system, the 
5000X16, al.so has a 6-megabyte hard-disk drive added to its 
configuration. In this configuration, it has a single 409K double- 
sided, double-density minifloppy-disk drive, as well as the hard 
disk and 256K of user memory. This system operates under 
MS-DOS and CP/M-86 and, since it is a micromainframe, the 
terminal is a user option. It is programmable in BASIC, 
COBOL, Fortran, and PascaJ. The second upgrade to this sys- 
tem adds a second minifloppy to speed hard-disk backup. 

The 8000X16, which shares the .same basic attributes as the 
5000X16, differs in that it has a pair of half-height, 1.2- 
megabyte 8- inch floppy -disk drives, rather than the 5'/i-inch 
units. The 50001SI6, which is has the same basic mechanical 
attributes as the 5000IS system, differs in that it has a 16-bit 
8088 CPU and operates under MS-DOS and CP/M-86. 

In its first upgrade in this price realm, this machine, with its 
256K of user memory, gains a 6-megabyte hard disk for storage, 
lliis is in addition to the standard 409K, half-height, double- 
sided, double-density disk drive. The second upgrade adds a 
second half-height minifloppy drive. 

Sony 

The SMC-70 small-computer system upgrades four times in 
this price category. In the first upgrade, the SMC-70 gains a 
5.7-megabyte hard-disk drive for data storage, while in the 
second, the system becomes a color computer, with an added 
12-inch RGB high-resolution color monitor. The third upgrade 
to this system brings the capacity of the hard-djsk drive to 
12.1 -megabytes, allowing much greater storage capability oti 
the monochrome version of this system, while the fourth up- 
grade brings much greater hard-disk storage capability with the 
addition of the 12. 1 -megabyte unit to the color SMC-70. 

Canon 

The ASlOO upgrades twice in this price range. The first 
upgrade adds two 8-inch floppy-disk drives to the system con- 
figuration, giving the user access to four disk drives for storage 
and increasing system capability. The second upgrade adds two 



I 



S^ncfi noppv disk drives to the contlguratjon ot the color 
ASim. 

NEC 

The PC-KHODC sm;ill-coinputer system upgrades in this cate- 
gory. The H-inch drive version of the PC-HHOO becomes a color 
graphics-capable machine when a 14-inch color monitor is 
added that can handle 640- by 400-dot resoluiion and an 80- 
characler by 25-lire text display. 

Fujitsu 

The Micrii 16 upgrades twice in this price category. The first 
step adds a 20-megabyte 5'/4-inch hard di.sk tor dense, high- 
speed data storage and retrieval, while the second upgrade 
e,\pands the u.scr memory to a phenomenal I megabyte. 

North Star 

There are three systems that upgrade in this price category, 
the Advankige HII6, the Horizon and the Advantage. The 
Adv(imiigeK/l6. driven by an S-bitZ80A and a 16-bit 8088. has 
its mass-storage capabilities increase with an added 5-megabyte 
hard disk. This change gives the user access to dense high-speed 
data storage and retrieval capabilities. The micromainframe 
Horizon becomes a truly powerful system with an added 15- 
megabyte hard disk. In fact, this change gives this system 
potential multiuser capability. A t5-megabyte hard disk gives 
the Advcmia^e high-density data-storage capability and brings 
added versatility to this system. 

Durango 

The powerful Durango Poppy upgrades twice in this price 
category. With the first upgrade, the small-computer sy.stem has 
its user memory increased to 256K. This lets the system take 
fuller advantage of the advanced capabilities of its powerful 
CPU, the 80186. With the second upgrade, the Poppy becomes 
much more fully configured. This is the addition of a 10- 
megabyte hard disk. When the memory size and hard disk are 
taken into account, this system becomes a candidate for multi- 
user status. 

Vector Graphic 

The co-processor Vector 4120 system upgrades as its name 
changes in this price category. With the addition of a 5- 
megabyte hard disk for increased storage capability, this system 
becomes the Vector 4/30. This change provides the user with a 
powerful, high-speed data storage option and increases the 
versatility of this system by several orders of magnitude. As the 
hard-disk capacity increases to 10 megabytes, the system's 
name becomes the Vector 4/40. 

TeieVideo 

The 16-bit TSJ602C becomes a much more potent machine 
with the addition of user memory. At this point, this smali- 




■EleelrMlcs rUBMimn 



DampubBPi 

Over $4500 



HEWLETT-PACKARD'S HF200 features Motorola's MCSSOOO micropro- 
cessor. 



computer system can use any of the advanced programs on the 
market. With an added 9.6-megabyte hard disk, the TS802H, a 
Z80A. 64K system, becomes much more potent, it now gives 
the user the option of truly high-density, high-speed data storage 
and retrieval. 

Gifford Systems 

A newcomer to our buyer's guide is Gifford Systems" 100/ 
100+ series of co-processor micromainframes. Since these are 
micromainframes, it's up to the user to supply the tcmiinal^ — 
although two of our listings indicate terminals and show how 
these change the cost parameters for these systems. 

Driven by S-bit 8085 and 1 6-bit 8088 CPUs, these systems are 
offered only with the CP/M operating system or CP/M-86, as 
opposed to MS-DOS. (This could prove a drawback in the 16-bit 
realm becau.se the emerging standard operating system, and the 
one that most software is being written for, is MS-DOS.) 
Equipped with 64K of user memory — somewhat limited for 
some 16-bit applications^ — this system has two standard 8-inch 
double-sided, double- density 1.2-megabyte floppy-disk drives 
for storage. This makes this system very versatile. Input/output 
is handled via standard serial ports, to which a variety of per- 
ipherals can be interfaced. 

These systems upgrade twice. The first upgrade adds 64K to 
the user memory . bringing it up to 128K . This makes this system 
more versatile and able to handle 16-bit programs more effi- 
ciently, while the second upgrade adds a terminal offered by the 
manufacturer. 

Docutel/Oiivetti 

At this point, the Olivetti M20 becomes fully configured. 
Actually two upgrades are included at once. With the first 
change, user memory is increased to 160K, making this system 
more versatile. The second change here adds a second 360K 
5 '/4-inch minifloppy-disk drive. 

Honeywell 

This is Honeywell's first appearance in this buyer's guide 
with its microsystem 6110. Driven by a proprietary 8-bit 
microprocessor — Honeywell Micro 6— teamed with an 8086, 
16-bit CPU, the 6/10 has 12SK of standard u.scr memory. It 
works under three operating systems: MS-DOS, CP/M-86, and 
a proprietary system. The standard disk drive is a 5 '/4-inch mini- 
floppy-disk drive for storage. 

Programmable in BASIC, the 6/10 accepts this and other data 
input through a standard typewriter- style keyboard. The key- 
board also includes a separate numeric keypad and special- 
function keys. User output is to a standard 1 2-inch monochrome 
CRT. Input/output chores are handled through two serial ports 
or one parallel port. To these ports a user can interface a variety 
of peripherals. 

The system has a key upgrade in the upper end of this price 
guide with the addition of a second 51'4-inch drive. 






to 
m 

s 

175, 



« 



The Wang Professional Computer reaches its fullest con- 
figunition with the addition of a lO-megabyte hard-disk drive. It 
gives the user much higher-speed data access, storage, and 
retrieval capabilities and increases the flexibility of this system. 

Athena 

This transportable microcomputer sy.siem reaches its fullest 
configuration in this price category, At (his point, the memory 
capacity is increased to a full megabyte. However, much of this 
memory is used as a virtual or pseudo-disk for high-speed 
program execution. 

Sariyo 

A new system debuts in this price range, the MBC 3000, 
driven by dual Z80A CPU's. Widi two operating systems avail- 
able, CP/M and the proprietary TS-DOS, this system has more 
than enough to handle most average applications. The disk 
drives available are two 8-inch double-sided, double-density 
floppies. Each of those drives is capable of up to 1 megabyte of 
storage, 

Programmable in BASIC, Pascal, Fortran, and Macro-80, 
this system accepts this and other data input through 59 
typewriter-style keys. The keyboard also features 22 programm- 
able keys and a 18-key numeric keypad. User output is to a 
1 2-inch monochrome display that can deliver an 80-character by 
25-line text mode. Inputioutput is handled by two standard serial 
ports or an RS-423 synchronous serial port. 

Toshiba 

The T250-5 system is an upgrade of the T250 system already 
described. It upgrades here and becomes more versatile with an 
added 5-megabyte hard disk. The addition of that drive gives the 
user (he ability to have truly high-speed, high-density data access 
and retrieval. 

Columbia Data Products 

The 16-bit 1600-4, based on the 8088 CPU. upgrades twice. 
The first upgrade brings a 12-megabytc hard disk to this 128K 
system. Backup disk storage is provided by a 320K 5'/4-inch 
floppy disk. 

This system, which runs under MS-DOS and is programm- 
able in BASIC and assembler, upgrades again here to 256K of 
user memory in the second reconfiguration. 

Sord 

Th& M68 is this small-computer firm's top-of-lhe-line sys- 
tem. A versatile system, it is driven by a powerftil MC68000 
CPU, with a Z80A acting as co-processor. Running under an 
operating system that is CP/M-compatible, this system has 
256K of user memory and (wo 1 .2-megabyte 5'A-inch miniflop- 
py drives for storage. This configuration is powerful enough to 
take advantage of the potential of this system. User input is via a 
typewriter-style keyboard and output is to a 12-inch 
monochrome CRT. Input/output is handled by two serial ports 
plus one parallel , and one IEEE-4888 general-purpose interface 
port. 

IBC 

The Cadei micromainframe uses proven 8-bil technology 
with a Z80 CPU. It has 64K of standard user memory and runs 
CP/M. MP/M and two other operating systems, MVT-FAMOS 
and OASIS. It is programmable in BASIC, COBOL. Fortran, 
(fy and assembler. Standard disk storage is one 8-inch I -megabyte 
y floppy-disk drive. The terminal is a user option. 



O 
cc 



Altos 



JJ Another micromainframe that debuts here is ih^ACSSOOO-lS. 

gj Driven by an 8-bit Z80A, il has 208K of user memory. It runs 

Q under the industry-standard CP/M operating system and has two 

Q 500K singte-sidcd, double-density disks for storage. It is pro- 

S grammable in BASIC, Fortran , COBOL, and SOFTBOL and is 

176 



meant to be ttie basis of a multi-user system. It has six stand 

serial ports and one parallel port as standard. Terminal choice is 
up to the user. 

This company's 5-15D is another micromainframe system, 
that dcbuLs here. Driven by a Z80B, this 8-bit system operates 
under the CP/M operating system. It has 192K of user memory 
and includes a 1-megabyte double-sided, double-density S'A- 
inch minifioppy-disk drive for storage. Programmable in BAS- 
IC, COBOL. Pascal, Fortran, and SOFTBOL, the system uses 
four serial ports and one parallel port for input/output. Since it is 
a micromainframe — ^a system box with a disk drive and interface 
poris — the terminal choice is up to the user. jH 

Ithaca Intersystems 

Another 8-bit micromainframe— driven by a Z80B 
microprocessor — is the Encore from Ithaca Intersystems, It 
operates under CP/M. Standard u.ser memory is 128K, and 
storage is on two 5'/j-inch single-sided, double-density disk 
drives. Since it is a micromainframe, the choice of terminal 
devices is up to the user. 

CompuPro 

Long a leader in S- 100 bus products, CompuPro 's System 
8J6fA also debuts here. A micromainframe small-computer 
system, it is driven by co- processors, an 8- bit 8085 and a 16- bit 
8088 and runs under CP/M and CP/M-86, User memory is 1 28K 
and storage is handled by (wo 1.2-megabyte 8-inch floppy-disk 
drives. Since it is a micromainframe, terminal choice is up to the 
user, but input/output funcdons arc handled through four serial 
ports and one parallel port included as standard. 

DEC 

The last of the four single-user microcomputer systems in- 
uoduced a year and a half ago makes its debut here, the Pro- 
fessional 350. Actually an upgrade of the Professional S25 , this 
system includes a larger system-unit box, that is made to accept 
a 5 '4-inch hard-disk drive. In (his version, storage is provided 
by a single 400K 5'/4-inch minifloppy-disk drive. User memory 
stands at 256K, or more than enough to handle any advanced 
application program. 

The system is driven by a proprietary 16-bit CPU, the PDP- fl 
1 1/238 and operates under a proprietary operating system. CP/ " 
M is available as an option. User input is via a slim-line key- 
board which contains 58 typing keys. There are special-function 
keys and a separate 14-key numeric pad. User output is handled 
by an 80-character by 25-line black-and-white monochrome 
display, while input/output chores are handled by a serial port or 
an RS-423 synchronous port. 

Radio Shack 
The Model III Desktop reaches its top conflguration in this 

price category. It becomes a full-blown business small- 
computer system with the addition of a 5-megabyte hard-disk 
drive. This allows the user high-speed, high-density data access 
and storage. A similarly equipped Model 4 would top out about 
the same price in (his range, too. 

A new model makes its appearance and becomes fully con- 
figured in this price category, the Model 16. Driven by the 
advanced MC68000, the Model 16 also uses a Z80A to handle 
the housekeeping chores. This frees the main CPU to handle 
information-processing functions. Equipped with 128K of user 
memory, that is expandable, (his system operates under a pro- 
prietary operating system. In its base configuration, it includes 
one double-sided, double-density 1.2-megabyte ilim-Hne 8- 
inch floppy-disk drive for mass storage. 

The 76- key keyboard includes a numeric keypad. Output is to 
a 1 2-inch green monochrome video-display screen that delivers 
an 80-character by 24-line display. Input/output is handled via 
two serial ports and one parallel port, included as standard. It 
upgrades and becomes fully configured at (he upper end of this M 
price category with the addition of a second drive 1.25- '^ 
megabyte slim-line 8-inch floppy-disk drive. R-E 



I 




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:trics) 



[GLeCTRICI 




MODERN ELECTRICS, Miniature souvenir 
of the first publication ever produced by Gems- 
back Publications. This issue appeared in 
April 1 908— just 75 years ago. You can own 
your own reprint of this unique first edition for 
just $2.50 plus 75c P&H. It's available from 
R-E BOOKSTORE, Radio-Electronics, 200 
Park Avenue South, New York, NY 10003 



Electronics. DTn]DDT10°Z^[D 





ELECTRO IMPORTING CO. CATALOG, 

This reprinl of the historic 1 76-page catalog 
No. 20 gives you an accurate look at the state 
of electronics in 1918. Contains everything 
from a Zinc Spark Gap to a 1 000-Miie Receiv- 
ing Outfit. You can get your own copy of this 
modern antique, profusely illustrated, for only 
S4.95 plus $1 .00 P&H. Order yours from R-E 
BOOKSTORE, Radfo-Electronics, 200 
Park Avenue South, New York, NY 10003. 




Make your own prototypesi This 14" IN- 
Llne Press Brake is constructed of high- 
grade ductile iron castings and steel parts. 
Standard equipment includes male dies for 
straight or box bends from Vz" to 1 4" plus a 
FREE urethane forming pad. Write or call for 
literature and prices on our SPECIAL Shear- 
Notcher-Brake package. PACIFIC ONE 
CORP., Suite K302, 513 Superior Ave., 
Newport Beach, CA. 92663; (714) 645- 
5962. 
CIRCLE 100 ON FREE INFORMATION CARD 




Introducing an ULTRASONIC ECHO 
RANGING KIT with up to 20 feet and greater 
ranging capabilities. May be interfaced to 
your microcomputer or used alone with an- 
alog output and 4 digit LCD display. Applica- 
tions in Robotics, Alarms, Positioning, Level 
control and more. Complete kit #ERS400KD 
@$1 39,50, Less enclosure and LCD display 
#ERS400 @$89.50. fvloney orders, checks 
accepted. COD add 1 0%. TRABAND ELEC- 
TRONICS, INC., P.O. Box 166, Clifton 
Heights, PA 19018 (215) 623-2700. 
CIRCLE £4 ON FREE INFORMATION CARD 





ONE MAN CRT FACTORY, easy operation. 
Process new or rebuild old CRTs for tv's, 
bus. machines, monitors, scopes, etc. 
Color, b&w, 20mm, foreign or domestic. 
3x6 ft. space required. Profits??? Average 
CRT rebuilding cost — $5. Sell for $100 = 
$95 profit; x 5 CRT's = $475 daily; x 5 
days = $2375 weekly profit. Higherprofits 
outside U.S.A. Investigate this opportunity 
today. We service the entire world. Write 
or call: CRT Factory, 1909 Louise St., 
Crystal Lake, II, 60014, (815) 459-0666, 
CIRCLE 84 ON FREE INFORMATION CARD 



High precision NTSC I and Q color bar gener- 
ator board. It is the main board from the Muiti- 
dyne TS-1 , a broadcast standard portable 
signal generator. Vectors are accurate to 1 
degree and amplitudes to 1%. All pulses are 
derived from a 14.318180 temperature com- 
pensated crystal oscillator. The board is guar- 
anteed for 1 year It measures 7¥4 5< 3% and 
requires and - 12 volts to produce 1 volt of 
video n 75 Ohms. It costs ,$198.50. A stan- 
dard 14 X 17 EIA Cross-Hatch and Dots gen- 
erator board matches the RETMA linearity 
chart and costs $125. Add $4.50 for insured 
shipping. Checks, money orders and COD. 
only Other NTSC boards available. Satisfac- 
tion is guaranteed. MULTIDYNE ELEC- 
TRONICS, RO. Box 528, Locust Valley, N.Y. 
11560, (516) 671-7278. 
CIRCLE 17 ON FREE INFORMATION CARD, 




COMPUTER/PRINTER DESK/STAND. 

New, Surplus stand was part of a KSR Printer. 
Mfg, cost over $100.00. Size; 27h x 24d x 
27"w. Space for electronics. Very Rugged. 
Add top of your choice. Use Order No, 
R2A70585. Only $39.99, $150.00/41 Shipped 
via Truck Freight Collect. 40 pg. pictured cata- 
log of surplus compter equipment available. 
BNF Enterprises, 119 Foster Street, Pea- 
body, MA 01960, (617) 531-5774. 
CIRCLE 98 ON FREE INFORMATION CARD 




SATELLITE TV SYSTEMS FROf^ $1,495.00 
AMATEUR MICROWAVE SYSTEMS FROM 
$60.00 T-3 Amateur Antenna-FULL PARA- 
BOLIC DISH very high gain $60,00 4 lot, 
$70.00 each. IMPROVED M-21 Antenna, fea- 
tures grid style antenna and extra high gain- 
low noise front end. $115.00 5 lot. $135.00 
each. Amateur Systems not available to 
Michigan residents. SATELLITE TV IN- 
STALLATION MANUAL & CATALOG ONLY 
$2.50. SATELLITE RECEIVER SYSTEMS, 
33117 Gratiot Ave., ML Clemens, Ml 48043, 
(313) 791-5551. 
CIRCLE 9S ON FREE INFORMATION CARD 





FREE! Ungar's new #9100 Electronic Tem- 
perature Controlled Soidehng System with 
each #2000A or #4000 Desoldering System 
purchased Sept. 15 through Dec. 15, 1982. 

For Model 2000A (for use with shop air) 
and a free $91.00 System #9100, order 
#2091 at $365.00 sugg. 

For portable Model 4000 and a free $91 .00 
System #9100, order #4091 at $399.00 
sugg. See your Ungar distributor or contact 
Ungar Division of Eldon Industries, Inc., 
P,0. Box 6005, Compton, CA 90220, (213) 
774-5950, (800)421-1538. 
CIRCLE 65 ON FREE INFORMATION CARD 



AMATEUR MICROWAVE RECEIVER - 
Regularly $99.50. Now liquidating at only 
$59.95 + $5.00 S & H. {Dealer ten pack just 
$499,00 F.O.B) Complete system includes 
dish, probe/downconverter, coax cables, 
power supply, and instructions. Top quality 
units. Supply limited. Money order, VISA or 
Mastercard ONLY, (No checks or C.O.D.) 
T,V. PRODUCTS CO,, 635 Park Ave., Dept, 
222, Idaho Falls, Idaho 83402. DE- 
SCRAIVIBLERS?? We stock all types. Send 
$5.00 (REFUNDABLE WITH ORDER) for 
new expanded catalog now including 
schematics. 



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MARKET CENTER 



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FOR SALE 



CABLE TV products; Wireless, corded & settop 
converters. Send $3.00 for catalog ADDITIONAL 
OUTLET CORP., 231 E. Commercial Blvd., Ft. 
Lauderdale. FL 33334. 

RESISTORS i/i&VsW5%C.F. 3 cents. 1%M.F. All 
values. No mlnlmums. Volume discounts. Write JR 
INDUSTRIES, 5834-B Swancreek, Toledo, OH 
43614. 

COLOR computer VIC-20 programs hardware Rtfy 
code EPROM Progammer RS-232 FRANK LY- 
MAN, Box 3091 . Nashua, NH 03061 . 

RECORDS— tapes! Discounts to 73%; all labels; 
no purchase obligations; newsletter; discount divi- 
dend certificates; 1 00% guarantees, Free details. 
DISCOUNT MUSIC CLUB, SSO Main Street, PO 
Box 2000, Dept. 3-1 0B3, New Roohelle, NY 1 0801 , 



_^ ^ WR(TE FOR 

^^McGEE'S 

SPEAKER & ELECTRONICS CATALOG 
1001 BARGAINS IN SPEAKERS 

1901 MCGEE STBEET KANSAS CIIY, MO. MlOe 

XENON FLASH LAMPS 





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ASK FOR OUR NEW CATALOG. 
CALL OH WRITE FOR INFORMATION. 



TECAlKST (USA) INC 

lOBBS WILSHIRE BLVD.. SUITE 740 

LOS ANGELES, CA 90024-4299' 

CA: 213/20B-55W • OUTSIDE CA: 1-800-421-7215 



PRiNTED-circult boards: single side, prototype, 
and quantity, quick delivery. Send positive, free 
quotes, FABTRON, Box 925, Dept. C, Columbia, 
TN 38401 (615)361-1143. 

RADIO West — still the best for SW/MW DX receiv- 

ers and receiver modifications! Catalog 50 cents. 
RADIO WEST, 3417 Purer Road, Dept RE, Es- 
oondido, CA 92025 (619) 741-2891, 

SCANNER/monitor accessories — kits and factory 
assembled. Free catalog, CAPRI ELECTRONICS, 
Route 1 R, Canon, GA 30520, 

FAST, dependable mall-order! Prime semicon- 
ductors, parts, supplies. Free 55 page catalog. 
THE PARTSTORE, Dept. 165, 999 44th St., Mar- 
ion, lA 52302 (319) 373-1803. 



RELIABLE MICROWAVE TV ANTENNAS 
^) to Z6 GHz 
Frequency Range 

; 34dti System Gain for Greater] 

'; tminiWt: Syili-m (tJicriicodI SI t9 95 

; 1)11*11 Ciinvprlei Prnbe Sfvit 
' ;i lAssmbled & teslem S 49 95 

^-'1 ' Power Supply I1?V to 16V DC>) 
11 rnsMintiled i tesledl S 39 95 



PETERSON 
ELECTRONICS 

■1558 AulJurn Blvt) 
Saciamento. CA 95641 
i916( 4ae-9071 
SPECIAL QUANTITY PItlCING 
Deelsrs Wirtliii - COD'S 




1 VEARWARRANTy 
PARTS S LABOII 



DESCRAMBLERSI Largest supply U.S.A.— 
Cataiog S3.00, TV PRODUCTS CO., 635 Park Ave, , 

Idaho Falls, ID B3402. 

COMPUTER cables, RS232, VIC 20 and C64 
cables, breakout boxes, and switch boxes. Mor»I 
For free catalog, write COMPUCOMM, Box 21 1 , 
South Sioux City. NE 68776. 

EPROM proqrammer programs 2716, 2732, 2764, 
and 271 28. For IBI^ PC $225,00 each. For Apple II, 
ROM version $195.00 each, diskette version 
$225.00 each. Also 64k add-on RAM card for IBM 
PC $140.00 each. $3.00 ship/hndlg. Check, money 
order, no COD please. Quantity discount. Dealer 
inquiries invited. LSG ELECTRONICS, INC., 3122 
Hollowcreek Dr,, Houston, TX 77062 (713) 558- 
3613, 

SATELLITE, microwave, video, audio components 
and equipment. Send $1.00 for 1983 catalog. 
DSCo, Department F, 3110 Evelyn Street. Rose- 
ville. MN 55113. 

ELECTRONIC survelllancel Incredible manual, 
"Homebrew Bugging" outlines wiretapping, 
bugging, and other techniques used by professional 
operatives (schematics included) — SI 5.00. We 
also have manuals on remote control, covert com- 
munications, survival, weaponry, exotic alarm sys- 
tems, countermeasures, and an Inventory of amaz- 
ing electronic devices. Send $3,00 for catalog. 
A.T.i.S., Dept, R, 61 Gatchall St., Buffalo, NY, 
14212. 



*•**********••••******•*• 

% QUALITY MICROWAVE TV SYSTEMS % 



\ Complete Systems From '69'* 



* 1.9 to 2.5 

* GHz 

* Antennas 

% Galaxy 
Electronics 

BOOTH. 61 St Ave. 
Glendale, Az. 
85301 

1-802-247-1151 
1-800-247-1151 



•*•*•**•**•**•****•*•*■*•• 



COD'S / Oealeri Wanted 




To run your own class tfjvd ad, put one wofd on aach of tha llrwi b«tow and send thla form along with your chack 
for si .90 par word (minimum 15 words) to: 

Radio-Electronics, 200 Park Avenue South, N.Y., N.Y. 10003 

ORDER FORM 

PLEASE INDICATE In which category of classified advertising you wish your ad to 

appear. For special headings, there is a surcharge of $15.00. 
) Plans/Kits ( ) Business Opportunities ( ) For Sale 
) Education/instruction ( ) wanted ( ) Satellite Television 

Special Category; $15.00 

PLEASE PRiNT EACH WORD SEPARATELY, IN BLOCK LETTERS.) 



1 



10 



11 



12 



13 



14 



IS 



16 



17 



18 



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26 



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PLEASE INCLUDE FOR OUR FILES YOUR PERMANENT ADDRESS AND PHONE NUMBER. 

CLASSIFIED COMMERCIAL RATE tor firms or individuals offering comercial products or services}, 

51 .90 per word prepaid (no charge for zip code). ..MINIMUM 1S WORDS. 5% discount tor 6 issues, 

10% for 12 Issues within one year, if prepaid. 

NON-COMMERCIAL BATE (for individuals who want to buy w sell a personal item) $1,25 per word 

prepaid... no minimum. 

ONLY FIRST WORD AND NAME set in bold caps. Additional bold face (not available as all caps) at 1 5e 

per word. Ad copy sutjject to publisher's approval. ADVERTISEMENTS USING P.O. BOX ADDRESS 

WILL NOT BE ACCEPTED UNTIL ADVERTISER SUPPLIES PUBLISHER WITH PERMANENT 

ADDRESS AND PHONE NUMBER. Copy to be in our hands on the 20th Of the third month preceding the 

date of the issue (i.e., August issue closes May 20th). When normal closing date falls on Saturday, 

Sunday, or a holloay, issue closes on preceding wortting day. 



FOR SALE 



T1-99/4A software. Free pric« list plus newsletter. 
GLEN DOBBS, Box 801 HE, Santa Maria, CA 
93456. ^_ 

TROUBUESHOOT design UHF converters vidao 
accessories latest system Info $2.00. New manual 
$12.95. A8tR ELECTRONICS, PO Box 381, De- 
dham, MA 02026. 

ALARMI Vic 20/ 64 CoCo Sinclair become 31 000 
burglar fire system. Cassette, documentation (spe- 
cify microprocessor) S29,00. Retailers Inquire. 
Catalog, SKIDMORE'S H'N'S, 716 Walker, 
Greensboro, NC 27403. Sinclair piano, music pro- 
gram cassette ail tiardware $9.00. 



A SINGER'S DREAM! 



RBMOVES VOCALS FROM RECOROSi 

Oui VOCAL ELI^^IfMATOR con remove tuost n[ 
vUluaHy oil o[ a Icod vocal from a sldTidkird iiterco 
record and leave most of the t>ack5round untouched! 
Record with youi voice or perform live wilh the 
bockgrounda. {J^ed in Professional Pcrlormancc ysl 
connects e^^^ily to a home tomponent stereo 
system. tSot an tiqiiaH/cr! We can prove it works ovei 
the ptinnc. Write or call for a free brochure «ind demo 
record. 

WritL- lo: LT Sound, Dept. R-1, PO Box 338 
Stone Mountain, GA 30086 

(rr (;iT.r,(f.j Cill f-70-J)-'W3l2.'ifl 
TOLL FREE: 1 ■800-241 -3005 — Ext. 72 



ANTIQUE radio catalog; 16 pages of tubes, parts, 
and literature. Send $1.00 to ANTIQUE EUEC- 
TRONIC SUPPLY, 1725 W. Univefsity, Suite No. 2, 
Tempe. AZ 85281 . 

UNUSUAL UHF Subscription TV kits and other un- 
its. Catalog 50 cents. TROJAN, 2920 Shelby, In- 
dlanapolis, IN 46203. 

VIC-20 TV-test generator cassette. Crosshatch, 
ooiorbars. dots, H&V-lines, window, 5 colored rast- 
ers, 3 tones. $9.95. JERRY MILLIARD, 3223 Ellis 
Way, Louisville, KY 40220. 

ADVENT and Kloss video parts and service avail- 
able from PROFESSIONAL ELECTRONICS. Call 
504-467-1 71 7 for further information. 

COLOR computer owners — free hardware and soft- 
ware catalog. SPECTRUM PROJECTS, 93-15 86 
Drive, Woodhaven, NY 11421 (212) 441-2807. 



THE BEJT" PLACE m BUY, SELL or 
TRADE NEW j/iij USED EQUIPMENT 

NUTS & VOLTS MAGAZINE 

BOX INI-E • PLACENTIA. CA ?1670 

(714) 633-7711 

)oin T1,ouIlndt of Rejdfifl Nationwide 

Every Month 

OHE rEAn U.S. SUBSCHIPTIONS 

57.00 - Ird aiu * $I1.HI . lie Clui 

^A SZS.OQ - Uffltrme - 3rd Clua ^E 



tCANNIM . O^TKt 
TE>T iqUIPMIMT 

AUDW VHUAi. 



COH^OMEHTS , Un 
AHT»gU1 lUCT. 

K«LKA710Kt 
f\M9 • HltVbCll 



RtUABLE PfllCROWAUE TV ANTEN^AS 

2.1 to i6 GHz 

Frequencv Range 

JAdt Sysipm (iairi [or (iftjicil 

COMPUTE SYSTEM 
Dish Style S 99.95 



S&W ELECTRONICS 

Boun1i1ul,Ut. B4C10 



(801) 2»5-1166 

snciAL gU«NTIIY n^tONG 
Ouliri WmM ' ms% 



2 Yeir Warranly 
Pirt! & Labor 



DESCRAMBLERS for down converters, high gain. 
Free information. RB ELECTRONICS, PO Sox 643, 
Kaiamaioo, Ml 4900S. 

PRINTED-circuit boards: Your artworit, quick deliv- 
ery, reasonable. Quantity discounts. ATLAS CIR- 
CUITS, Dept. A, Box 892, Uncolnton, NC 28092 
(704) 753-3943. 



HIGHLY 
PROFtTABLE 



ELECTRONIC 



ONE-MAN 
FACTORY 



Investment unnecessary, knowledge not re- 
quired, sales handled by professionals. Ideal 
home business Write today for' facts' 

Postcard will do, Barta-RE-X, Box 248, 
Walnut Creek,- CA S4597. 



BUSINESS OPPORTUNITIES 

PROJECTION TV... Make S$$ assembling pro- 
jectors... Easy... Results comparable to $2500.00 
projectors... Your total cost less than $20.00, ... 
Plans, lens & dealers information $17.50. ,.. Illus- 
trated information free ... MACROCOM-GBX, 
Washington Crossing, PA 18977. Credit card orders 
24 hours. [215) 736-2880. 

OESCRAMBLERSI Largest supply U.S.A.— 
catalog S3.00. TV PRODUCTS CO,, ft3S Park Ave., 

Idaho Falls, 10 83402. 

WHOLESALE MATV/CATVA/CR equipment, an- 
tennas, audio cables, adaptors, original/ 
replacement cartridges & styli, telephone accessor- 
ies, radios, cassette recorders, speakers, etc., send 
letterhead for free catalog (21 2) 897-0509 D&WR, 
66-19 Booth, Flushing, PJV 11374, 

MONEY broker, commercial business loans to 
start, expand, etc. $50,000 to millions. Send $2.00 
LOREDO ENTERPRESES, Box 2243 APO NY 
09009. 

MECHANICALLY inclined individuals desiring 
ownership of small electronics manufacturing 
business— without Investment. Write: BUSI- 
NESSES, 9E-R, Brighton 1 1th, Brooklyn, NY 1 1235. 

LCD watches $2.50, penwatch $3.60, catalog $!.00. 
RELIANT ENGINEERING COMPANY, PO Box 
33610, Sheungwan, Hongkong. 

MAKE additional income and have tax write-offs. 
Free into, Contact DEPT, A, PO Box 222, Harbor 
City, CA 90710. 

SECURITY alarm industry booming, Tremndous 
demand. Employment— business terrific. E-Z 
learn. Information package $2.00. SECURITY 
ELECTRONICS INTERNATIONAL, PO Box 1456- 
NE, Grand Rapids, MI 49501. 

CB EQUIPMENT 

CB radio books, kits, modifications, catalog $1.(X) 
refundable. APS, PO 263RE, Newport, Rl 02840, 

EPRQM PROGRAMMER 

FOOLPROOF. Programs 2716 through 27128; 
2508 through 2564; 281 5'16 eepromsl Others tool 
Features: Stand atone single board design. Zif 
eprom sockets. Automatic duplication. Program 
verify. Regulated power supply— requires only pow- 
er transformer. Complete documentation. A/T 
$149.00 Compare! Why pay more? Manual S2.00. 
refundable first order. LUSOMIB CORPORATION, 
PC Sox 511, Rensselaer, NY 12144. 



ROBOTIC BOOKS 

ROBOTICS books — build your own robot. Write 
now for free catalog. H. D. KOHN CO., RE2, Box 
16265, Alexandria, VA 22302. 



DESCRAMBLER TROUBLES 

SINE wave dascrambler problems? Manual in- 
cludes trouble shooting, alignment, antenna 
hookup, improvements, theory. $15.00. SIGNAL, 
Box 251 2-R, Culver City, CA 90230. 

CONVERT S/W KIT TO CABLE 

CABLE slnawavsdescrambler from over-air. In- 
structions including deluxe, scrambled microwave, 
optional over-air. $8.00. Manual in descrambler 
troubles classification, instructions, $20.00. SIG- 
NAL, Box 251 2-R, Culver City, CA 90230, 



SATELLITE TELEVISION 

SATELLITE antennas; build or buy 8-10-12 foot 
wood or metal from $43.00 send $2.00 PHO- 
TOTYPE ENGINEERS, Box 1812 Deming, NM 
88030. 

SATELLITE TV receiver breakthrough I Build 
your own commercial quality receiver nowl 
Complete Instruction manual $8,001 XANDI, Box 
25647, Dept. 21 P, Tempe, AZ 85282, 

OESCRAMBLERSI Largest supply U.S.A— 
catalog $3.00. TV PRODUCfrs CO., 635 Park Ave., 
Idaho Falls, ID 83402. ^^_ 

SATELLITE TV ayatem S1295 completel 8' arh 

tenna, polar mount, 120 LNA, receiver. Handbook 
and buyer's guide, $10.00. Dealers wanted, 
MICROWAVE SYSTEMS, 1101 E. Chestnut, Santa 
Ana, CA 92701. 

FREEI Information on 100 satellite television chan- 
nels plus free catalog of proven do-it-yourself plans/ 
kits for easy, low-cost, attractive satellite antennas. 
Wholesale electronics components. GFI-S, Box 

91 08, Missoula, MT 69807. 

THE original Howard /Coleman TVRO receiverl in- 
structions, schematics, layouts, printed-circult 
boards: ROBERT COLEMAN, Rt. 3, Box 58-ARE, 
Travelers Rest, SC 29690. 

RECEIVE 80 channels satellite system only 
$1299.00. Complete Information and order forms 
send $3.00 to REMINGTON'S SATELLITE 
SALES, RR2, Box 124, Noblesville, IN 46060. 

SURPRISING news about satellite television: time 
to know the facts! Send $1.50 SASE to INFINITY 
ELECTRONICS, 1378 Norvella, San Jose, CA 
95122. 

SEIKO TV watch— Watch TV or listen to FM 
stereo. Imported direct from Japan — limited supply, 
S498.00 for standard model. Money back guaran- 
tee. Send check or money order or use Visa, Mas- 
terCard. Allow 4 to 6 weeks. THE MEUNIER COM- 
PANY, Dept, R, PO Box 4235, Federal Way, WA 
98003. 

MOST comprehensive video book and manual on 
the market. 150 pages. All types, UHF, cable, sat- 
ellite. Complete troubleshooting for Zenith systems. 
24-hour COD hotline for orders. 301-668-7099 or 
send $21.95 plus SI. 50 shipping to TELE- 
PUBLICATIONS, Dept. RE-10, PC Box 16693, 
Baltimore, MP 21206. 

UHF types, all delux, cable units, dealers (Zenith 
units) excellent quantity pricing. Call (301) 882- 
9362. Send $2.00 for catalog. SATELLITE ELEC- 
TRONICS, Dept. R-10, PO Box 9534, Baltimore, 
MD 21237. 

INTERESTED in home satellite television — don't 
buy anything until you've read Homesat Hatidbook 
& Buyer's Guide. Our book tells everything alx3ut 
home satellite TV and may save you hundreds, 
oven thousands of dollars in your selection and 
installation of a system. $10.00: H 4 G hfOMESAT 
SERVICES, Box 422, Seaford, NY 11783. 



SATELLITE TV VIEWERS 

Get the most complete weekly listings. 
5«nd $'( for lampk copy. 



m. 



^^^TFT* 



1 






P O. Box 308, Fatuna, California 95540 

IM-ln-»9f7 (U.S.} •tOa-SM-«TI7 (Ccllf.) 

7OT.T>j.M7< (ill attTt) 

HOME ROBOTS 

WORLD'S largest supplier of Home Robot kits/ 
parts. Motors, seeing/fiearing sensors, batteries, 
robot mounted computer for programming controls 
and playing video games. Inexpensive, easy con- 
struction, Complete kits 599.95. Send $3,00 
(refundable with order) for information package, 
photos, catalog, club membership to: ROBOT 
SHACK, Department 10, PO Box 583, El Toro, CA 
92630. 



REVERBERATION 
FOR ORGANS 



Solid state with controls for rever- 
beration and room size. 
EVERY ORGAN SHOULD 
WN ONE. Sand for frat tlytf- 

DEVTRONIX OfiGANS, INC. 

6101 WAREHOUSE WAY 

SACRAMENTO. CALIFORNIA 9Sa;6 tJepl. 6 



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COMPUTERS 



PLANS & KITS 



MAX* Z* tech Tim ex hi-tech lo-price educational 
programs, Dataaquis, Hardware upcoming. For 
samples mail %2.00 to: CASH PROG., PO Box 
31 8R, Nfld.. NJ 07435. 

■n-99/4A owners. Send for free list of new and excit- 
ing, low cost software. DYNA, Box 124, Hicksvllle, 
NY 11801, 



EDUCATION & INSTRUCTION 

EARN your university degree Ihrougti evaluation 
assessment, of existing education, experience, 
achievements. Cali, (614) 863-1791, or write, 
ASSESSMENT, Box 13130 R, Columbus, OH 
43213. _^^_ 

UNlVERSITYdegreesbymaiilBaciieiors.t^asters, 
Ph.D's.., Free revealing detaJis. COUNSELING, 
Box 317-RE10, Tustin, CA 92660. 

YOUR own radio station! AM, FM,cabie, licensed, 
unlicensed. Low cost transmitter kits. Free info. 
BROADCASTING, Box 130-F10, Paradise, CA 
95969. 

F.C.C. commercial radiotelephone license. 
Home study. Fast, inexpensive! Free details. COM- 
MAND, D-91 , Box 2223, San Franclswj, CA 94126. 



REEL TO REEL TAPES 

TRUCKLOAD sale Ampex high quality open reel 
tape, 1800' or 2400' on 7" reels, used once. Case of 
40, $45.00. Cassettes availabie.VALTECH ELEC- 
TRONICS, Box 6-RE, Richboro, PA 18954. 



CABLE TV 



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CHANNEL 3- 65dB super notch filter. 63.5 mHz. 
$29.00 postpaid. TV PRODUCTS, 635 Park Ave., 
Idaho Fails, ID 33402. 

DEALERS wanted; Channel 3 notch filters, send 
$15 for sample and quantity price list. Moneyback 
guarantee, CeE KURTZ, S3SSWa7thTer., Planta- 
tion, FL 33324. 



LSR UHF CONVERTERS WITH 
AGC 

GATED pulse wave (speaker box type), parts 
S12S.00. Sound out of the TV type: Deluxe IIB sine- 
wave, parts $125.00. Digital z-type FV-4, parts 
$225,00. Quantity discounts. Plans: large SASE (54 
cents postage), Free shipping/handllno. 1-312/267- 
3455. LSR ENGINEERING, tlept. RE, Box 6075, 
Chicago, IL 60680-6075. 



DESCRAMBLERS — CABLE ~ 
UHF — TVRO 

DESCRAMBLERSl Laroast supply U.S.A.— 
catalog $3,00 TV PRODUCTS CO., 635 Park Ave., 
Idaho Falls, ID 83402, 



WANTED 

WANTED: old Western Electric, RCA, tubes, 
speakers, amplifiers. 713 72B4343. MAURY 
CORB, 1 1 1 22 Atwell, Houston, TX 77096, 

TRANSFORMERS rewound specialist will rewind 
yourhardto replace radio transformers, choke colls, 
series coils, etc. Any type. Send name and phone 
number to; A,T.S., PO Box 13773, Orlando, FL 
32859. 

RADAR equipment any type, any condition needed 
for experimental use. Contact A. WEINER, 207- 
764-6022, 



TOOLS— TOOLKITS 
FREE CATALOG 
CALL (215} 825-4990 

HXPEHIENCE • QUALITY • VARlETi 




CATALOG I 40 pages of neat electronics parts and 
kits. Send 50 cents refundable first order. BEC 
ELECTRONICS, Box 401244R, Garland, TX 
75046. 

FUN kits — low cost. Easy to buiW educational 
electronics projects. Handbook /catalog $1.00. 
TRIANGLE ELECTRONICS, 89 Arkay Drive, 
Hauppaugs, NY 11788. 

PRINTED-clrcult boards. Quick prototypes, pro- 
duction, design, retlow soWersend print or descrip- 
tion for quote to KIT CIRCUITS, Box 235 Clawson, 
Ml 4a017. 

PROJECTION TV,., Convert your TV to project 7 
foot picture. Results comparable to $2,500 pro- 
jector... total cost less than $30.00. Plans & lens 
$19,95,,, Illustrated Information tree„,Credit card 
orders 24 hours. (215) 736-3979. MACROMA-GB, 
Washington Crossing, PA 18977. 

ELECTRONIC touch light control pad and other 
products free brochure EXOTIC ELECTRONIC 
IDEAS, PO Box 446, Lake Bluff, IL 60044. 



any 



Write: RESEARCH, Box 517FBrea, CA 92621, 

MOST advanced sine converter descrambler 
available, PCB and plans $1 5. JIM RHODES, 1025 
Ransome Ui., Kingsport. TN 37660. 




Modular ^Qtlpn featuring plug-In COHBIructlon . 
Deiign your own camblr^Atlon of functloni. Writs. 
RODCAfl ELECTRONIC SALES 214-3S1-SSfl5 
aSB^ Manro« Drive Oillaa.Taxti 7$220 



CABLE, TV converters and equipment. Plans and 
parts. Build or buy. For information send $2.00. C & 
D ELECTRONICS, PO Box 21 , Jenison, Ml 49426. 

SUBSCRIPTION TVoutofset UHF sine wave type, 
PCB and plans $16.50. In set UHF/VHF type, PCB 
and plans $12.50. RVB INDUSTRIES, Box 653. 
Skokie, IL 60076. 

DESCRAMBLERSl Largest supply U.S.A.— 
catalog $3,00, TV PRODUCTS CO.,eas Park Ave., 

Idaho Falls, 10 83402. 



, — . .,. , -;ia'--- 



increase channels, range, privacy! We specialize 
in frequency expanders, speech processors, FM 
converters, PLL & slider tricks, how-to books, 
plans, kits. Expert mail-in repairs & conversions. 
16-page catalog $2 



CBC INTERNATIONAL. P BOX SlSOOflE. 
PHOENIX. AZ 8S046 (6021 996-8700 



CABLE TV descrambler kits plans $4.00, For in- 
formation send $2.00. DOMCAN ELECTRONICS, 
PO Box 605, Downsview A Downsview, Ontario, 
Canada M3M3A9, 

UP-TO-DATE design electronics kits. High quality. 
Unbelievable low price. Absolutely free catalog. IN- 
TERNATIONAL POLYTECHNIQUES, PO Box 
e62H, New York, NY 10002. 



FREE KIT Catal og 



FUNCTJON GENER.ATOR KIT $59.95 
Aulo-Ranging Cap-malBr kit $79.95 

Phone 209-772-2076 

Writ, or Phono for TREE ClTALOO 



contoin^ 
' TESI & 

experi- 
menter's 

L EQUIP. 



riAf^C SCIENTIFIC INSTRUMENTS 
UMV7C BOX 144 VALLEY SPRINGS CA 9S2&2 



SPIRIT life energy detector and separator complete 
plans $4,00. PO 893, Torrance, Ca 90508. 

SAVEI Build your own cable TV converter. Com- 
plete manual $3.00, JKA ENTERPRISES, Box 234, 
Lyman, SC 29365. 

MICROWAVE tetavlalon "downconvertara". Ex- 
clusive new five stage design. Easily assembled. 
Catalog: S2.00 (refundable). NDS, Box 12652-R, 
Dallas, TX 75225, 

PROGRAM your own EPROMS. Build a eom- 
puterizftd therm o«tat. Send SASE for free details. 
GLOVATRON, PO Box 559, East Detroit, Ml 48021 . 



DESCRAMBLERS 

AMERICAN— CANADIAN 

C-iaO0 / ZENITH TYPE 

De scrambles "over im air" ma 
"MtiU" sync siJpcrssMa Ictivt 
video mversnn sigr^als 

, Riady In go C-1000 379 H 

^ Cimpltte Xlt C-IOOOK I7i SJ 

Pilnled Circuil & Manual 74 9S 

C-IDO / JERROLD TYPE 

Catflfl Oascrambler for ir^-band gated 
sijppfssssfl systems 

119 9S 
54 9S 




Ready lo go C-IOd 
Csmplele Kil C-IOOK. 



SEND ti FOR COMPLETE INFORMA TIVE CA TALOG TO 

oennuiNE whattvpe youweeo. 



FALL 
SPECIAL 
Buy 1 kn 
Git 2n(l kit 
It V] price 

Olltrerids tan r 13 



JftDENGINEERINQ 

P.O. Box G099 

Falmouth, Maine 04105 



Dealers Wanted 

Special Qua n (If)' Pricing 

COD'S— OK 



All J & p pri»ducli >ft >nfinflered no! zop^e ill tit Qvai>MtK 
90 iifi £ Afl Hind tjfhini] Q,jr producls wh^te others )}il n 



TOP-qua))ty imported, domestic kits, surplus elec- 
tronics, iC's, free catalog. TEKTRASONIX, 175 
Fifth Ave.. Suite 3194, NY, NY 10010. 

20C electronics kits, projects, plans. Send stamp 
for list. MATCO ELECTRONICS, Box 31 6R, Cadf 

lac, Ml 49601. 

"IN band" descrambler for cable ready television 
sets (except Zenith) $139.95. Kits $99.95. Info? 
SASE. ALLSEN ELECTRONICS, Box 2125, Vero 
Beacti, FL 32960. 



BF MOOULATOttS 
for' tha wMao Inau9try/ 

twkBllllil lllAA>tk>t»^ '■■- ■ lihl I 4 11B.L Ltun ^^ 



ilUHFI 




tMIIIH nadulitm tan dvMHl : 

KITi L iiiHiAM nwtali for ill Ml H K BHfMrtcj.. .btcludlnt m ha 
Atvl*-iV1lf d(llpi4d1«rfAaflTlivll^«fl(TTUItr, AUg Hi tITtntiTt 
lint >l minn, CUMlin HI kin. FREE PITILDQ 

ji/j ^^^^ PHOMt «0) »T->ni 

1)-«E BRDimtY 
DtKirrt SITY, HE tllll 



^tt^a 



CABLE TV descrambiers. For plans send $3.00 + 
SASE. ELECTRA, 610 Brasted PI., Wavkeslia, Wl 
531 S6. 

TELEPHONE recording control kit. Records 

incoming/outgoing calls automatically. Connect to 
your telephone and tape recorder. Easy assembly 
with case. $16,95 kit. S20.50 assembled. Includes 
shipping. Guaranteed. CREATIVE ELECTRON- 
tCS, PO Box 4253, Thousand Oaks, CA 91360. 

BUILD this electronic-tone circuit to replace that 
harsh telephone ringer. Gives soft tones, ctiirps, 
beeps, and buzzes with simple dipswitch settings. 
Fully explained schematic and creative suggestions 
included. Questions answered same day. PRO- 
FESSIONAL CfRCUITS UNLIMITED, 3509 Park 
Lane, Suite 1032, Midland, TX 79703. $5.30. 

LEARN copying secrets Atari Vectrex game car- 
tridges Includes schematics $19.95. ATOMIC 
COMPUTERS, PO Box 177, Dyer, IN 46311. 

HI-FI speaker kits, auto speaker systems and raw 
drivers from the world's finest manufacturers. For 
beginners or experts. Free literature. A&S SPEAK- 
ERS, Box 7462R, Deniver, CO 80207 (303) 399- 
8609. 

LIGHT chaMr/coior organ kits, rack mount units. 
20% off sale. DESIGN SPECIALTY, PO Box 1995, 
Huntington Beach, CA 92647, 

CATALOG: Hobby, CB, Broadcasting. LInears, 
transmitters, bugging devices, scramblers, 
downconverters, much more. $1 .00 (refundable). 
PANAXIS, Box 130-F10, Paradise, CA 95969. 



STOP 



LooKifb wan i«B>BtORs, CAPMcifoiH, Dioocfj Mrmiit 

HUTDVAHC, COKTrtOLA, POWEfl PIK«]*TCMI. TTUkHailTOM. 

IC'S. muvarovwiHt , ruac*, kit*, lco. cabiiwts. 

■■HD fl.eo 4 REFUHCUWLE ] . FCft QUR CATW.03 CT OVOt 

tjoa rrfj* en tew a stju^ row ou* rLvra, 24 jholr 

TURK AnOUHD Tt« - LC* mCH . I00»^ OUUtANTCE 

Da y tapro Electronics, Inc. 

|S02« H. WILSHmE LNm ARUNGTON HTS., ILL. 60004 
3l2-arO-Q565 



MAKE RADIO SHACK YOUR PARTS PLACE 

Wide Selection! Low Prices! "Hometown" Shopping! 



Versatile New ICs 



-|59 



Low 
As 

TCM5089 Telephone Tons-Dlaltng Generator. 
Accurate dual-tone output with low THD. Micro- 
processor addressable — ideal for use in an auto- 
dial modem. Line or 9 VOC. 16-pin DIP with data. 

276-1301 3,99 

[CL7660 Voltage Coverter IC. Input: -1-5 VDC. 
Output: - 5 VDC, up to 1 mA. Ideal for memory 

circuits. B-pin DIP with data. 276-2335 3.79 

MC3423 Overvoltac|e Sensor IC. Protects sensi. 
live electronic circuitry by triggering an external 
LED or crowbar SCH in the event ol line transients 
or loss of regulation. Usable from 4.5 to 40 VOC, 
8-pin DIP with data. 276-1717 1.59 



10 X 10cm Solar Cell 




Harness "Free" Power 
That's Available 
Every Sunny Day 



Save '8°^ 
gss 



Reg, 
17.95 



Cut 45%, Build 3 panel for charging batteriss or 
powering projects. This quality cell, approximately 
4" square, produces 0,42 VDC at 2 amps in full sun. 
Wire several in series for more voltage, 
276-128 Sale 9.B8 



21-Range LCD Multimeter 




Audible 
Continuity 
& Range- 
Change 
Indicator 



Reduced 33% I Time-saving continuity function 
"beeps" at less than 300 ohms circuit resistance. 
"Diode checit" allows testing of diodes and transis- 
tors. Measures AC and DC voltage, AC and DC 
current, and resistance up to 20 megohms. Over- 
load protected, e^/sx 3V2x I^/b': With manual, 
spare fuse, test leads. Requires two "AA" batter- 
ies. 22-191 Sale 39.95 



Melody Synthesizer 

NEW! JB^^Me 
599 '^"''Wiw 

23-Pln DIP 

A¥-3-135a Melody Synthesizer. 28 built-in 
tunes! NMOS device is ideal lor doorbells and 
musical (unboxes. Pre-programmed with Torea- 
dor, William Tell, Yankee Doodle, Blue Danube, 
Star Wars, America, Beethoven's 5th , other pop 
and classical favorites. Or add a PROM and cre- 
ate your own. Auto switch-off at end of tune. With 
data. 276-17B2 5.99 



Universal Breadboard 

NEW! 
1995 



This 2'/* X 6'/i" builder's board is mounted on a 
7x4" "stay-put" steel base with rubber feet. 
Accepts DIPS, discrete components and up to 
22-^auge wire. Total of 640 plug-in tie points. 
3 binding posts for power hookup, etc, 
276-169 19.9S 




Universal 
PC Board 

NEWII95 

Accepts ICs up to 40 pins. Total of 750 
Indexed holes with solder rings, two 
busses, one grounding strip. Mounting 
holes at corners. S^le x 2^/9", 
276-168 ..1,95 





Lighted Switch 
NEW! 495 

120VAC SPOT Puah-On; 
Puah-Otf. Contacts: 3A at 
120 VAC. Lamp requires 12 
volts, AC or DC. Mounts in 
Vs" diameter hole, 
275-676 4.9S 



Sealant Tape 

Or^ NEW! 
r 249 

Waterproof, non-corrosive, stays 
flexible, ideal for outdoor antenna 
connections. 5 ft. x ''h" 



278-1 645 



.2.49 



Power Cable 




ie-Gauge 



329 



Two-conductor, color-coded cable 
is ideal for many uses. 25 feet. 
278-1250 3.29 



Coax Stripper 

NEW! 
995 

Adjustable blades for perfect strip- 
ping of RG-6, RG5S, RGBM, RG6Z 
andother cables from Vm to s/is" 
dia. 278-240 9.95 



Cable Clips 
NEW! i^ 
199 



Pkg, of 10 \,, i 

Keeps cables up to ^tt" dia. in 
place. Adhere to smooth, non-po- 
rous surfaces, indoors or out, 
27S-1640 Pkg. of 10/1.99 



PC Board Spacers 
NEW! 

69<^ 



Pkg, of 8 



Nylon type, mount PC 
boards ^la" from chassis or 
enclosure. Snap Into place, 
270-1391 Set, 690 




Resistor 
Networks 

NEW! 89' 



mm 



IC Pin Spacing 

FtvB saparaia V^-waii resistors in on© package. 
Ideal for LED current llmiiUng and dlgiiaJ circuilfi. 



Ohms 


Cat, No, 


Each 


470 

10M) 

IOI< 


S7 1-095 
271-096 
271-097 


.89 
.89 
,89 



Transient Protector 




Keep Up With New Developments 



^49 



VBZA1 . This MOV (metal oxide varis- 
tor) protects circuitsoperating at 5 VDC 
and below. Absorbs potentialy damag- 
ing voltage transients. 
276-569 1,49 



Miniature 4PDT Relay 

Cut 260/^ 
349 



ir iiatu re 



Underelandmg 
■fetephone 



349 



From 

Tsxas 

instrumante 

Learning 

Center 



ttlMAMk 



"Jumbo" Neon Lamp 
NEW! -|99 



I Undef8tan*jfl 
OoninM*a«^| 



Each 

Pilot lights that can't be overlookadi Re- 
quire Wb" diameter mounting hole. 



Color 



Red 
Green 



Cat. No. 



272-71 
272-71 1 



Each 



1,99 

1.99 



Reg, 
4.69 



Switches up to four circuitsi Contacts: 
3A at 12s VAC, 120VAC coll, PC or 
socket mounting, WaxVlax^Vit". 
27S-St2 Sale 3,48 



295 




Ferrite Beads 




Understanding Telephone Elec- 
tmnlci. Learn how your phone 
works and read about the impact 
electronics is making on telephone 
systems. Illustreied. 256 pages. 
82-1388 3,49 



Understanding Communlcetlons 
Systems, Covers the beslcs of 
electronic communications— tele- 
phone, television, fasclmile. data 
links and more. Illustrated. 256 
pages. 82-201S 2,9S 



NEW! 

89 Pkg, of 10 
For EMI/RFI Reduction 

Install over Insulated wires or component 
leads to reduce RFI and stabtltea circuits. 
Diameter of hole; 0,7mm. BF40 material. 
273-088 Pkg. Of 10/896 



• 



Radio /haeK 



A DIVISION OF TANDY CORPORATION • OVER 8600 LOCATIONS WORLDWIDE 

PrlcsB apply «l psrtlclpallng Ftsdic Shack aiores and daaleri 

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HI-TEK HKil HUMEmC KPf?M 

tr%T iwxtioi chirtMi «r*v kntipi, MwiEtd *■ jAim ocud bHt<. 

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JE664 EPROM PROGRAMMER 

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mi 

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til .19 

til H 

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piriHc iqhi MnV i*i epwiEiD^. ihi uitf t^ii in an jr^-tiuic Ihig bi. r3 h 
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Buck J^ Tft in%\ ti t\it}f 4tilHnt1iE TiK BiKk Htfi U^hti Ihi Bug Eth Jnia 
pHi. 1urnt on Ir* UV URtpt ia4 iim ln-iuRi' ItfU Milt ijCUDS] IfV intvgnitu 
d«4 llmf T** Qtrcirtlagt trutira timi u ountcrMl and dlwJrH i" M irwil pinai 
LEO r»9w1 Ai tntKnd c' E)w Brill e^t;*. im BUek Hm i|Kt) Ihi Buj B^ cv 
Uininj iht } vntKi EPRCWi ih4 luini. otf pmif 

PA HI MO. PHICg 

ULV'OOS Rapljcamanl Limp ler ens-DM . . . . 139,95 

EflS-OOS E/iiar,AulA^K|lLEDIlaad<iu1.. . $249*96 



IBM IVIEMORY EXPANSION KIT 



SAVE HUKDHEDS OF $$$ BY UPGRAOING 
MEMORY BOARDS YOURSELFI 

HiHl fli Ibt pc^lir mifliQrir bearda lilfiM yen Lb ad.^ an addltlMul 
UK, 13bK, 1KK, ar SHJ<. Tha IDH(I4K KM will jMvpulaaa ihaa* luarda 
In UK byEt IncfimanEi, Tlu kit Ei limtila to Itiilall -^ )uat litiaM ir>a 
nifla I4K IUH ehl^i in Lh>» p^Af ld*d lo^kaO itiA lai iha it/a gristjps 
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EXPAND YOUR MEIVIORY 



THS-80to16K, 32K,or48K 
*'M«lil 1 - Fiin 4K It 1GK Kaqiilraa |t] Una Kit 
Modal 3 - Ftam 4K U 4IK Haqulrai (3) Tlirai KttI 
Caloi - Fran 4K la lifK aa()iilrai (1] Qna Kn 

"HBdU 1 «»plpp«« w|{h EiHHitn BMra V» It UK Tmt KRi Rj^uhri 

- ^M H HtqN^id lor UEh 1BK |[ E^fpuibn ^ 
THS<1«K3 -ZIHIni for Color & Modal III . . .IIZ.SS 
rFIM!K4 -MOni for Model I J-IO.BS 



TRS-8a Color 32K or 64K Conversion Kit 



Eiiy !Q mitiLiI -K'C COm«» c-Dm^lats wUh A la. 4i«4-Z jKHnil B4K 
tr^namic RAMa ^canvaraia^ dpCMm^nttilon, ConvarEaTRS-HtOiOf 
cdtnpuEarn wkli E cljcuie boarda. & all niw color ccmpulai^ to .J3K- 
Mi.n«r mMiritaiionaC^ 32K manioc wllliHow thtuatal bIii1Iii64>CcH 
IfA ct^^narTMo FLI.M prodding rov hiy« • FLEX DOS oparaHnp lyitcTi 



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POWER SUPPLY -fSVOC^I AWPREQUIATED Tjiniaci/orp r* cr. 

Oui?Li +SVDC a tA tiJii ^iffVDCHig. Inpiri lllvAC«DHz. Mirw MttkJb^ttti M^'iackud 
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m 



POWER SUPPLY +GVDC @ 3 AMF> REGULATED 

IhBiKl. 11IVAC, 47-4UHIZ Oulj^ SVOC Ad|ut " ' 
JiiH Hmh K^plt t NAlu . JUV rmi . IMV p-p - 
i-'i' L It J.JnS ■« ■ w1. J Ibt. OH* iMUlMl 

PartNo,OPS-1 



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P1]WEA SUPPLY 45VDC @ 7,G AMP. 1ZVDC @ 1.E AMP SWITCHINQ 

|r::-| 'UVAC. tS-HQHiO 3iinp/EUVAC.!IUlie LBirvT- rji*M*I..^Batnf ifliprr iiltcC ruiill'' 
E.h||^11J,''230'^AC| i3ul^il.BV[>CaT E imp livtcd 1 .» imp . E K. lA. MW. Wd. 11 ^^ "W J 

n'a"a ij^v 'H >m t\» 

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5%" hAlnl'Flappv Disk Drlv« 

FOK TFtMO UODGL J < COLOR COMPUTER 

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yrh*. U'14 deuM Ewwy ShI: Im 2S<nw: irici h 
VKk. Pen* •IWK faDSVi IB* iw +5ra 
|*OHV|iCiWnw Umnpc lliiMdieiirdnii cm. 
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Sia 5*"WirTli3^V 
Pail No. Lfmljud QwtntrJti Prlca 

FD2M S179.9S 

Blngh'ibdad. 40 tricks, 240K bylii cijuali-^ 

FDaso S199,9S 

PiHiU*-ild«d. n tnchl. 439K b]n«) CRPicMir 




1 



POW£R SUPPLY 4-Chinnil Swllclilig ^ Appli CampiUbli 

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FREE 19a3 JAtAECO CATALOG 
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8; FLOPPY DISK DRIVE 




• ShuBBTt B01R 
compailblf 

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» 77 TrackB 

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Ttw FDDlKl-l E' Floppy EtltH Qri^a (IfuSuilty SttndirdJ latturai 
lingia or dO'JiiJa otr-ntv nK&rdiiM; mcda: FH iltiAia, MfU doubla 
dViliLy. Trtnilflf nil J50K bllKiae. alngn d«<nti1y; im*', blEiJHC 
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TlBiVAQO eO^Kc ^UVaC ft l.Tiinpi mai.. -!iV[>C ^ 2 arfipi 
max UmE ai plciu^td «bOv»4d04» nol iricluda cbh. v&nm lupply. or 
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185 



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For information (213) 973-1921 • Orders Only (outside Calif.) (800) 672-8758 



j£ 



POCKET LIGHT 

Compieta vvEth 6~ llauTescent lubg., powerl'iul bulb and 
hflfldy strep. Runs on 3 [>CS 1,5V "C" Skze battones 
{not induded). ti's a practjcal, corvorianl, powGfful 
spotlight and Iktura&cani iF^hi. lis superior quality is 
KJeal for tnt^ooi or outdcor use. 

LOW PRICE S6.50 



SAMVO UHF VARACTOR TUNER 

FOR UHF CHANNELS 14-33 
Tumng voltage + 1 to ■^ aaVDC. Input irnpftdanco 
7Sii IF band width 7-l6MHz. Size S'A' x 1 y*" x V." 
Supply vohoge t6VDC- 

Model i15'B-4Ci3A, Video IF 45.0MHi 
Modsl 115'B-40SA, Video IF S2 SMHz 

S 19.95 

Tuner ts ihe most importanl part of ihe clfcuil. Dooj 
lei those Si^.OO luners fool you. 
All unrts afe brand r^ewfroni Sartyo. WJian Drdering 
plaasB specJIy model numbcT. 



2:1 



MARK IV— 15 STEP 
LED POWER LEVEL INDICATOR KIT 
TTiis rt6w ale^eo irKllcator kit cor^slstB o4 3^ 4-coloi 
LEO"! {1 5 pe? chinriDl) lo Indtcala Ihe sound levfil 
output of your ampflfler from -36da to +3dB. 
Comes wHh a wall deahgnad stik scrcHini pflntsd plas' 
tic panel and has s selector switcti to allow floaiing or 
grsduial oufpui ImdicafinQ. Power suppFyis €^1£VDC 
with THG on boa^d input senslEivliyconirols. Thisunii 
can wQr1( with amy amplifier frorn 1W lo 200 W Kil 
Inclutfas 70 pes driver Iransisiara, 38 pes mitched 
A-oAor LED'a, All electronic oomponanis, PC Beard 
and Ironl panel. MARK IV KtT ISI .50 




ROURESCENT AUDIO LE\^L MONITOR 

Thl& b th« kind of VU monftor ihHt '« being toe-d tjy 
mwt ampiiflar rnanufuctiirere. IC's are U3*d to ainipilfy 
circuit layout. E4Sy bo Aasembto and can be used wlih 
bII powef laval aniplHisf?. Power requirement 12VDC. 

TE-221 KIT 
ForJuit$28,&a 

(LimltM Stoc);] 




IHtB^ 



TA-IOOO 

KIT 
$51.95 

Power 

Trantformer 

S£4.00 eft. 

100WCLASS A 

POWER AMP KIT 

Oynaoiic Bias CiBSS 'A" circuit da»ign makes Ihia 
unlf unique In its Class. Cfyolal clear, lOOwittte power 
oulpul will SBliafy Ihe most pk;ky fens. A pertsct 
coimbtnallon with ttve TA-1020 low TIM stereo pre- 

amp. 

SpedHcationa > Output pcwfir 1O0W RMS into 8EI 
12SW RMS knito 4(1 • Frequency responae 
lOHz'iOOKHi ■ THD lese Ihan 0.01% ■ S/N ralio 
better than 80dB ■ Inpul sensitivity 1V max. < Powef 
su^y =40V at SA. 



1 WATT AUDIO AMP 
A)l p«n» art pr»-&isanibiBd on A mini PC Softrd. 
Suj)pi/ TOlt»gii e-svoc Sp«cl»l Prict ti.M 



6W AUDIO AMP KIT 

TBAaiO wUh VolumB Control. Powsr Supply 
g.iSVDC Only 17.50 H. 



"FISHER" 30 WATT STEREO AMP 

MAIN AMP (-tew * i). Kll irtclL'Llii 2 pes. F>9ti«i PA 
30t HybfKt IC, 111 tlHOironIc j»r1« wittt PC 8oBrd 
Powflr supply :ti6VDC (not lnclL>M{J]. Voltaf;* bbIh 

Suptr Buy OnlySIB.W 



Ovlv-Kitt Calir (im;l Mdxicq A Caniidn) 




LASER 
SUPER LATERN 

Bniaiani flourescent Fantern 
TftTth 9" 6 watt flourescent 
tube. Features include. 
Po*&r^u^ dirocl bearn spd- 
itght wjlh 9V pf e-focus butb; 
Buzzer horn • oiiher con- 
siant or Imne mlervsis of 
sonk: alarm; Twin blinkef - 
red amber Mashing or rfld & 
arnber flashing on lime 
intoirvals: Fully adjuatabPe 
nyton strap. Operates Irom 
size ba1teri«5 or plugs 
inio vehicte cigar Itghlor 
eocket- 

SPECIAL $11.85 



6-WAY A/C ADAPTOR 

Input; 110VAC, Output; 3V, 4,5V, 6V, 7.5V and 
t£VDC. Current: 300mA. 

OUR LOW PRICE 
$5.50 SB. 



Ha FCt; Lltfiifi 

naitulrtil 

OUFI PHICE S49.50 

Ad^ttjsnjt Microphont 

fTttdMiRttf] AvilliU* 

itS^e.Ddes. 



CflYSTAL COHTIOLLEO 

WIRELESS MKIflOPHONE 

SYSTEM 

Transmitter: FET mio lor Itat 
30Hz-1BKHz response. X'tal 
conlroUed 49MHz AM Band 
for dnlt-free perforinance. 
lOOmW output (range 
•pprox. V^mllejfoffe- 
lUbl* long range 
-=i~ m transmission. 

Fi '_%? Powered by a 9V 

'^Z^^. ™^ battary. 

^^ ^""^mmt^ Receiver; X'tal con- 
'"^ trolled focka on 
4dMHz transmlfier signal. Cn panel VU meter, moni- 
tors (he signal slrengin (ronn ihe microphone. Stan- 
dard ptione Jack outiel connectton to a P.A. or othar 
phona inpui. 9V beilery irncSuded- This profassk>nsl 
set IS idaai for on atage, in flak), church. In houae o^ 
□urdoor usa. 




A GOOD BUY 
at $65,00 

TA-800 



120W PURE DC POWER STEREO AMP KFT 

Q fitting powe r hu ngry from your smal I am p7 Here's a 
good iiolul»on I Th a TA-SOO is a pu re DC amplilher with 
a buJit'tn pfe-amp. All couplir^ capacitors are elimin- 
ated to Qive you a Inie repioduction of tfie music. On 
board tone and voiurne controls combined wlUr buHl- 
in pcnver supply make the TA-800 Ihe most compact 
stereo amp svallabls. SpecH^ai^ns: COW x Z Into 
fltl- Freq Rar^e; OHz-100KHE^3dB. THD; .01% or 
better. S-'U Ratio: SOdB. Servsilivity: 3mV lnh> 47K 
Power Requirement: :::24.40 Volts. 



milSTLE ACTIVATED SWTTCH BOARD 

AN boards ere pra-aeeembled and tested Vou 

whiBlio to ha FET condenuf rnicrop;ione from a 
dialancfl. as lar aa 30 feet sway (sanslilvily can be 
easily adjusted], and It wlH turn Ihe swDch on. If you 
wti^alEa again It wJll turn off. ideal for remote control 
toys, eledrioet appliance such as lights. ODffee pota. 
TV, Hi-Fi, radio or other projftcta. Unit worKi on 
SVDC. 

Modal 968 IS.SO •§. 



LOW TIM DC STEREO PRE-AMP KfTTA-IOM 

incorpoFstos brand-new DC de«ign thai gives a Ire- 
quency reapdnae from O-tOOKHz ::0.5dB. Added 
features iika tcie dafaat and ioudnesB conlrol let you 
tal^r your own f re<tu&rvcv supplwa \a a II minate power 
riuctuBtionsi 

Speciricallons; * THD/JIM lesi than .005% a Fre- 
quency reaponaa DC to IQOKHz :::0.[!idB * f^lAA 
devjatior rO.JdS e s^n ratio better than 70da • 
Sensllrvity; Phone 2mV 47K:i, Am 1 0OmV 1 0QKii* 
Output ravat 1 .3V • Mas oulpul 1 6V • Tone controls; 
Bess ^lOdB r<^ 50Hz. Treble =tOdB <» lEHi • 
Power supply ^24VDC fn 0.9 A. Kll conges with 
regulated power supply. AH you need la ■ 48VCT 
Iranifcrmer fu 0,5A. 



Onfy t44.i 
Trtnitormtr 
$4.60 



liNlVERSAL 
NI-CD BATTERY 
CHARGER MW-39B 



Charg&s. 9 V, AA, C or D s^ze N^CD Pfitleries all at one 

time. 

Part No. 050-01 90 $1 1 .50 «s. 



SUPER FM WIRELESS MIC KIT 

ThiE new desig;isd circi^ii uses high FREQ FET 
iTansislors with 2 stage pre-amp. Transmits FM 
range (SS-ISOMMz] up to £ blocks away and wHih tt>e 
ultra sensitive condenser microphone that comes 
with tt>e kH aikiws you to pk:k up anty sound within 15 
fl. away. Kit includes all electronic parts. OSC coils 
and PC Board. Power supply 9VDC, 
FMC-105 $11.50 Fwr Krt 



PROFESSIONAL FM WIRELESS 
MICROPHONE 

Made by one ol the leading Japanese manu- 
facturers. Tfiia lactory assambtad FM wireless 
mkirophona is powered by two AA slia batteries. It 
transmitsm |he range of &B-ioaMHz. Element is bum 
In a plaslK tut>e type case with an omni.directk>nal 
offlctronic condenser microphone unit, By using a 
^andard FM radto, signat can t»e heard anywt>ere on 
a one acre lot. Sound quality was Judged "very 
good." MODEL WEM^3e was S16.50. 

ON SALE $«.2S ea. 



HEAVY DUTY SOOmA 
MULTIPLE AC-DC ADAPTOR 

For all batteiy operated electronic e<tuipment up to 
SOOmA with LED Indicator. 

Input: ltT/2£OVAC,6afeOHz 

Output: 
3, 4.5. fl, 7.5, 9 and 1 2VDC. 

MocftI SA<«112A 
125.00 ai. 



% 



SANYO AhTTENNA SIGNAL BOOSTER 

This Boo«tar is specially designed lor (JHF Channels 
(14-63). After inatalling (between Ihe antenne input 
cable and Ihe UHF turner), thia unit wiJI provide a 
minimum of lOdB (lain. that is spproximately 2 tknwa 
better than you are seeing now. Ideal lor those who 
lEve in apBftmenta that can not put up an outdoor 
antenna. Small iin size, only Z" k 'i'/i" x 1", SuppEy 
voJiage is 15 VDC. ^ 



Model 00^0076 
$12.50 




PROFESSIONAL REGULATED 
VAniBLE DC POWER SUPPLY KIT 

All solid state circuHry wittt hjgh effloency power Iran- 
altor£SD3SQand tCvottagfl ra^lab^MCl733. Output 
voltage can be adjusted from 0-30V at 1A current 
llmhed or iD-ISV at 2A current limtfed.. Intemal leslst- 
ATKa la less than 0.00:511, rirpf^ and rwisa lass than 
1 mV, dual on panel rrwters lor voUaga and cumant 
reading, also with on bo&rd LED and audlbte over kwd 
indkxaior. Krt comes wiih pra-drviled PC Boenj, instnuc' 
tiona. ell necessaiv electronic comporwnta, trane- 
fontiar end a professbr^aJ k^oMng matsJ cstKnei The 
beat projed lor ichoo! and the niosl uselul instrument 
foe repfilmien. ^tkj one today! 

Mcxlel TRBSA 
0-16VDC r<i 2A 



: i ri A 2 i ModalTRSaS 






SSe.SO p«r Kit 






1^ SPECIAL 1^ 
Excalltnt Pricti 
Modal oat -0034 
$28,8(1 per Kit 
Tuntlomwr 
HO.SOm. 

TA-32a 30 WATTS TOTAL 
tSW -f- 1SW STEREO AMP KIT 

Thti It 1 solid atAtft dit trartal^tor ctrcuitry wttt> or, 
boirtf .t«f90 prv.iiniptof miQiJ micfofthofw or phorvs 
mpui Pow«< oulpul fruptoyi a heivy duly Powar 
Hybrid IC. Pour bulll on board CDr,tfdl» lor, 
voluni*, balinca. tr«bla itnd bua~ Power supply 
re^uif*9 4evCT ^.SA tranaiormsf. THD of lass thin 

S.l^bttAlHll tOGH^.tOKHltt lull pbw>r(te Witts 

15 WsfIB loaded. Into 8(1), 



^ih»i7[MPM] tt. ti.»iidhnc.|Ch 

ii:>uoo Over SJjO.UU 
ch^iHO PurchfiMf 

I cm, 5*S> 

IS*^. lO^^ii 

7^\, ?.&%, 



n Order SIO OO^Catir KcsKlrn 
iittii fi.S'^, S<ilft^ Tj4x PhDiiL' Ordrsrtt Acci-pU.,. 
on VISA or MC ONLY NOC.O.D/s. ♦>rices*iulj 
loct to nhoritjt^ Wlih out notice. 



LOW T.I.M. TRANSISTORS 

100W + 1MW 

* Empjoys Httachi \cm rwH I.e. fw pte-sit>p * U$x. 

iDulput 16 V P-P fnon distoflKjn) ■ Witti hhtow Wt«, and 
tone defeat Qrouii * Pear powAr amp wfth. sticrt circuit 
proteetKjfi - (jiant heal sink for msionyum lesutts * Tone 
ccotrels 1 1 4dS * All componBnis (except pots fof vol- 
ume, arxt torn CDTHrels} are pfe-aaaembtad, U^ qusilty 
IS guftrtnteed. - Power suppfy DC±35V.£0V 




-i-^-ir!ry'.*rv 



MODEL: SAS02C 

Pan #370-0340 W5.00 

POWER TRANSFORMER 

(SBV-SOV CT 6 AMP) 

Part #670-0220 $24.50 



60W + 60WO.T.L. AMP 

Stereo pre-arnp-^tene control -*-pow«f vnp. AM in or 
unit, fully auemtitedi Compact In size: T-jti^-vS^^: 
Can be fitted Into most ceblneta. Power ttwislstors 
using 25C166T X -( ta^Mt a mut QUt;pvl d OCW-i-eOW 

(en) 

■ Frs*pjency raspongs: SBHi-MKHi(-itliB) ' Total 
hsfmontc diatortion: 0.0£% ( 1 KHz) * SiQuaitJoise Rito: 
SB da {open loop} - Tone control: 100 Hz; 18 dB itj 

KHzs l4dB * Dynamic t^^n: 80 dB - Power Supply: 
4eV-70V5 Amp. - FlUerCepachor; 4700 M'76V0f Oetter. 




7- .. ^fr 



MODEL: SA-452tl 

Part #370-03S0 tsg.VS ai. 

1 Triflifomw Part #6TIHI230. . . 121.50 aa, 

2 Fittar Capacitor 4700)iF TOV 

ie.50 ai. 



MAGNETIC HEAD EQUALIZER 

' Slirytsfd RtAA curvs FOfjil1klr>dsolrTwionfl(lcrw*dt»3 
fftayfli cn}uov«r circuit lor best results * Outpul volti^ 
guarameed bo b« itatil* nfthom viy oscylaitton * Power 
Supply: £4 V.D.C. 




MODEL: MA-t4S 
Pari #370-370 , . . , , $6,M M. 



STEREO MIC. AND ECHO MIXER 
FOR STEREO AMPLIFIER SYSTEM 

The Cineurtry employs ail integratBd circuria, BSD type 
echo Gircuii. echo time csn be adjusiecf [n^ax, .30 
Msec.) Alio w^ 1 rrtkrophone pnamp vn the bcmiti. 
Fully uaembledr 






MODEL: MX£0« 
Part #37(H)3aO . . . . , $2»,e5 9t. 




20 STEPS BAR/DOT 
AUDIO LEVEL DISPLAY KIT 

This nsvr dselgned si^ho |«vtl d:>piay unit i) us^ng i 
new integrabid circuit from hatlorisi ^sfniconductor to 
d/lve 20 pitctsof c^lor LEDa (green, yalibw and nd) on 
each channel. It provldsj two typw of dlwHy metiiod* 
fw leleotlon 'bar' qi 'dot'. Tho display rsrvg^ ia Irom. 
- G7dB m OdB. Kit II good for any amplHtar Irom 2 watt 
to£00 wattal Power auppjy requirw 12V AC or DC. Soft 
la great for cara aa well I KA convss with pdnter circuit 
board, alt LED&, eiectrorw: companerrta, awltchea, and 
silk scnean printid prtif^ssiona! front par^. 




tlODIL: TV-45 
Part #370-0£SO ..... $31.50 



I STORE HOURS 

! MON-FRI— 10-7 

SAT- 10-6 

III flCl'Lf COMPUTERS. II4C 



CIRCLE 76 ON FREE WFORMA TIOM CARD 



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FflRMULA INTERNATIONAL INC. 

•#J|^ DEPT e • 1SW3 CRENSHAW BOULEVAHO • HAWTHORNE. CALIFORNIA 90250 • (213) 973-1921 



<.«* 



pinecoin" break thru! 



NEW IMPROVED 
KEYBOARD 



No more copyright problems 



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1 100% Apple |[ Compatible! 

Features: 

• Upper/lower case •Full size key- 
board Willi nuivicric key pud 

• Auto repeat keys •25 Pre-programmed 
function keys »48K RAM user memories 
can expand to 192K •2W Audio AMP witt" 

volume control •High resolution color 
display with graphics •nO/220V5 AMP 
switching power supply •Guarantee to run 
on CP/M •Fully assembled and tested 

DIRECT SALE $549.00 

(Add 5% shipping and handling) 



AUTOTERM™ 

80 COLUMN CARD 



%^ 



»^ 



• 40/80 column auta-selectable 

• with NORMAL/REVERSE and 
HIGHLIGHT functions 

• capable to run PASCAL & CP/M 

• SH I FT function as typewriter 





PART = 
900-0080 

$75.00 



EPROM 

PR0GRAIV1ER CARD AP-64e 

Program any 2716, 2732 or 2754 EPROMS 

• Plug to any slot of your apple* computer, 

• No extra equipment needed, completely reliable 

• Auto blankcheck, compare, read, copy, 
monitor functions. 

• Automatic verify. 

• Errors indicated on screen, 

• Burning voltage adjustable. 

• Dip switch for different E PROMS 

• No jumpers required. 

• Firmware included. 




ANTI-STATIC PLASTIC 
MINI-FLOPPY DISK 
STORAGE CASE 

Holds up to 75 S'A" diskettes 
with 4 dividers 
color: smoke clear on top 
with light brown bottom 

MODEL; MINI-FILE 
SI 9.95 EACH 



GREAT INPUT. 

Introducing the KoalaPad ' 



Touch Tablet 



• Undfr $12'; wilh Micro llluitrdlor'" softvfdre. • P.uklk". 
lovhtu k, kevtawrd .ind mouse m one. • Pefl'e( t lor com- 
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Commodore', .ind IBM' perw)n.il computers. • Com- 
|i,itlble with niosi )(,ime and edu(>itional softw.ire- 




fntroductory Offer '99" 




80 Column card for Apple lie® 
SPECIAL $49.95 each 
-■Al Model; 80CI IE 

Hv™ *THIS CARD IS NOT 
MADE BY 
APPLE COMPUTER 




HEAVY DUTY JOYSTICK 

FOR APPLE* OR PINECOM COMPUTERS 
Metal case with 2 fire buttons, 360 degree 
cursor control, auto centering and two fine 
trimcr 

MODEL: THE COMPATIBLE li i34.9S 



Apple 11+ Compatible 




THEMICRO-ll 

The Apple look-alike 

and compatible computer, 

48K RAM on board with numeric key pad, ^^Hy assembled 

upper/lower case keyboard . Special price 

SORRVI ROM SET IS NOT INCLUDED! $519.00 



Vipp/e tl & Apple lie are registered trademarks oj Apple Computer, Inc. U.S.A. 



u 
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OUTSIDE CALIFORNIA 

PMOMP nnnpnc hmi v 1 .Ann.R79.fi7.(;p 




nAi 1 Toi 1 rnPE 






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. AppiF.>>'c«i>ti>i>ijifad>in<rkoi APPLE COMPUTERS. INC. SEND SI. 00 FOR OUR DETAILED CATALOG. 


■ 


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■ u J.T^'« ,;" » "*r '"^^l^'t <"">"""" 0">" "o w < cii. n»k>.... HX) .51. STORE HOUHS 

■ ,„„« ..,„.„,. "S ■ '""'""-'• S.I.. I- pn«- o^n icwi.. «, U.S. w wc MON -FRI - 1 0-7 

■ |^£-7:.„...„.«,:.„...i ;^ ,^ ONC^^.O^.O0..P.......„,,„..^ SAT -10* 








































































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CPU'S & 

SUPPORT 

CHIPS 



SIX 


4.S 


aa 


SK 


SSOA 


2.75 


BO«U 


6.75 


Moian 


S9e 


lasa 


199E 


mil 


l.BO 


Sitt 


^GC 


me 


1.76 


£22* 


!.K 


8236 


rso 


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3.« 


sia 


E.€a 


BIK 


BJSE 


B2I7 


14 CO 


SiS 


3.S 


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19.9E 


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19.96 


S2S0 


10 9S 


SHIFT 


REGISTERS 



B2&t 



«ZJ^5 



rsoACPU 

ZffiBCPU 

zscusso 

3CAP1Q 
ZBOACTC 
THS93Z7NL 



4M 
&S 
fl.96 

4.SC 

S25& Eiffi 

835$ T2ffi 

6.TC 
4J5 

4S5 

fl.TS 
S9S 
1S.9S 
12.3G 
13.9B 



SCR's 





I.CA 


CA 


3SA 11DA 


100 


3S 


,41 


1.« 


axi 


« 


.» 


1 .SO 9.00 


4C0 


60 


,70 


2,40 11.00 



1.00 3,60 15,00 



TRIAC's 

PRV 1A 10A ;SA 

100 35 -S] 1 « 



EPOXV GLASS VECTOR BOAHD 



200 ,50 ,80 ISO 



400 ,SI 1,00 2,60 



eoo 1,00 1,M 3.60 



eeos 
eeio 
eazi 

am 



INTER 

FACE 

Er 

DRIVERS 

BS6 isge 1,50 



C/MOS 



MM 1402 
MM14« 

UMEOeO 



1.7B 
\.7b 
1.7B 
2.50 
2.50 
2.50 
2.50 
2-5fJ 



DESC 
Cantroltsni 

1771 . 16.60 
1791 2&,[n 

ina 3Gra 

17BG 4G.0Q 
1797. 46.00 

RAM'a 



2.96 S130 
2.55 0030 

4,93 sas 

39-50 8634 
8B37 



a.so 

2.C0 
2.C0 
WM53CI7 7.95 
Bni»1L a9G 
CRTSm? 18,95 
UM53e9 2 SO 

PTUTa 6.9e 

AYS-1013lA3,Tfi 
aV5 3660 g.i? 



ROM's 

270e 3.BQ 

2716 * ^ 4.» 
2731 fi.50 

2J3W2 990 

232 7,» 

2764 9.^ 

MCM8a7S4C1fi-ffi 
1.9S 



1^331 » 

B2S1S 

eisi» 

AMaJ14C 

74£3e7 
74S474 



1.9S 

t.as 

1.95 

3,00 
2-96 
1.25 
1,76 
a.95 



21D)A-4 

21102-3 

2111 A 

31H-2 

2147-3 

TMS3*» 

TMS^OSCftll 2.86 

MK^oee-ii t,26 

MK4a02 



1 GO 

,70 
1,96 

2,60 

1,7S 
t,76 



41C&3 
411^ 
4110-15 
411B-4 

S101E 
Z6H>M 

eiis-4 

4164-15 
3242 



\.%a 

.96 
1,50 

5.50 
2.86 

2.50 
E.50 
E.50 
8.C0 



WRAP WJI^E 

SINGLE 
STRANG 

100'. *1.« 



CRVSTALS 

2.000 6.144 

3 000 8.K» 

3.B73 10.QOO 

I.QM 1B«M 

5.000 18 '132 

eOOO 2fl.HM 

2.95 ea. 



4164-2 - $5.50 
4164-2 - 100/$500.00 
4116-2 - 100/090.00 
2114-2 - 100/$100.00 



4ff3l 

«12 
4D13 
«H 
4D1S 
WIS 
4017 
44lt 
4011 



406t - 
4051 - 
*OSt - 



4070 

«J71 

«77 



4G11 
W4 
«h1I 

4(M1 

<4&» 



74C0a ^ 77 

74004 - 36 

74C0t - X 

7*Cl£( - .17 

74C14 - ee 

74C30 - 17 

7JC» - H 

74C42 - 1,00 

T4C74 .H 

74Cre - .70 

74CH - 1.«] 

74C4I - .3) 

74CH ~ .H 

7*CiM - 2.60 
74C1B7 



74C1M - 
74C1I3 - 
T4C17J - 
74C174 - 
74C1?ft- 
7<fC>» - 
74C»] - 
74002 - 
74Ct14 ■ 
7«K1 - 
7'C13 ■ 



. 1,70 
. 1.11 



74S SERIES 7flsas 

74SO0 ,3a '^^*^ 

30 

30 

4S 
40 

,x 

36 

40 
40 

.40 
.4C 
,70 



74S0Z 
74S03 
74SW 
74S0S 
74S[H 
74S10 
74Sn 
74S1S 
74&20 
74S30 
74S32 
74S74 



74S8S 

74S112 

74S133 

745136 

74S13S 

74S139 

74S140 

74S1St 

74S1E3 

74STB7 

74S1SS 

74S1«1 



1.2S 

.eo 

1.90 
.S& 
.50 
1.10 
1.2S 
1.10 
1,70 
1,25* 
.9G 
t,2S 
1,26' 
1,76 



LIMEAR CIRCUITS 



2N3820 P FET * .49 

2H M57 W FET * .46 

2N2e46 UJT » ,45 

Efl 9001 RIGGER lODES,, . , 4I»1,00 
JN 6028 PROQ. UJT , . S ,66 



DISC CAPACITORS 

lUFtsv to,»n» 

01UF35V 16 SI 00 



100 - S3 I» 
100 56 00 



PAiAnrsD oincuFT board 

4'<e"00UBl.ESIDED EPOXY BOARDEO ' 
»,S1» 



TOGGLE 
SWITCHES 



, SPOT — ,» 

- OPDT — 1,30 

, OPDT — C£HTEB OFF *1 « 



IN4148IIN914) 15/1,00 



L1411-1R OertCTOR 3;»1,00 

fPIOOPHOTOTHANS S .50 

FIEOLeO'a,:- a,f!l,00 

YEL. GREEN or AMBER LARGE LED'l ,2", , 6; It, 00 

HEO-GBEEN BIPOLAR LED I ,90 

HED.YELIOW BIPOLAR LED 5 ,90 

MLErallR LED i .40 

MRDMB PHCTO CARL, XTOR t ,bO 

UeT20PTOISOHTOflS t ,00 

4N26OPT0 ISOmiOR » ,40 

1 WATT JENERS; 3.3, 4.7. 5.1. 6,6. 6,8. 
8i 9, 1 , 10, 12, 16, IB, Of22V , , 8>»,00' 



DAQQeEQ 
TLM2 CP - ,9 

TLC64 CN - 1, 
LM201 - ,75 
LM3Q1/748 - 
LMW7 - ,» 
1.M30S - ,16 
LM310 - 1,10 
LM311 - ,KI 
LM31B - ,76 
LUm - ,ES 
LM339 ^ ,« 
tM34S - ,90 
LF361 - ,GG 
LF3S- ,» 



3.75 LfSBS - 
9G LM3Ga - 

LEO LM3ai - 
LM370 - 
LM377 - 
LM38G - 
LM3H - 
LM3S7 - 
LMSm - 



GS9 



- 3.B0 
B6S - 1,a 
U& - 1.2E 
Eff? - 1,10 
709C - ,3S 
7nCH - M 
741CV - ,« 



74S1S3 


1,40 


74S169 


1.76 


74S174 


1,40 


74S17E 


1,40 


74Sia2 


1.7B 


74S194 


1,10 


74SJ40 


TTO 


74S241 


1 50 


74S2S7 


1.30 


74S25S 


1.30 


74S260 


1,S0 


itsmi 


1,7B 


74S373 


Z,2S 


74SW4 


ITS 


TS 


747 - ,S0 




::A76e - 1.35 


.Ml 310 - 


l.M 


ItM- ,S 




i«e~ K 




-Mieoe - 


1,7( 


-M2901 - 


,W 


;a3<ii)- 


1,t6 


:A3a7«AT 


- 1.H 


^A3)C«- 


.7S 


:AxmE - 


1,7B 


ADZ7aH.D 


- 4.91 


CA3140- 


1,00 



LM3909- 
4136 - ,H 
NE696A - 
De3D3B - 
a038CC - 
LM130ffi 
(700CJ - 



I.Ed 

1.76 
3.90 



FULL WAVE BRIDGE 



wn 



FLAT 

RIBBON 

CABLE 

GRAY 

28 gauge 

26 conductor 

.80/ft 

40 conductor 

.90/ft 

50 conductor 
1.00 



DIP SWITCHES 

CTS 206- 4 4 POSinON .75 
CIS 206- 7 7 POSITION 95 
CTS 206- 3 fl POSITION .95 
CTS2C0-10 lOPOSrTlONt2E 



DIP 
SOCKETS 20 PIN .25 

3 PIN .10 22 PIN .25 



UPIN .12 
16PIN .15 

18 PIN .20 



24PIIJ .25 

28 PIN .35 
40 PIN .40 



WIRE WRAP 
SOCKETS 

14PIN 
18PIN 
1BPIN 
20 PIN 
24 PIN 
a PIN 
40PIN 



20KV DIODES 
250,7.. $1.95 



DB CONNECTORS 

OeSf - 12,0) 0B2&P , t2,4Q 
0^9$ - 3-00 0B2ES - 3.20 
HOODS- 1,10 .HOOnS- 1,10 



OP, 400Dhmi;<]ll 
.96 



SILICON POWER RECTIFIERS 



24<lA 
6 00 

"am 

13 M 
1500 
1800 

2600 



PHV 


1A 


3A 


12A 


BOA 


12SA 


too 


05 


14 


.35 


,90 


4 26. 


200 


ffi 


T7 


.50 


T.30 


52S 


4C0 


OS 


.2G 


es 


V50 


66Q 


«00 


,11 


-30 


SQ 


2C0 


B&O 


800 


13 


36 


ICO 


J5<J 


10 SO 



1 2S JCC 1250 



REGULATORS 



LM338K,,, 
LM317T , - , 

7aL05,7BL12, 



,S5 76 
t1,3S 



320TE, 12,15cx24 t ,95 
LM337T S1-95 



JZ3K.ltA14D5L,,,*l,76 

LMXKG t -75 

3«!T-5. B, 8, 9, 12, 

15. IBorMV . . 4 -75 
LAS1412 . 12V 
3A 13.96 



TANTALUM CAPACITORS 

.22UF3SV S(S1.(X) I6Ufl6V 3/91.00 



.47L(F35V 5; $1.00 
.68UF35V 5'91.C0 
1UF20V 5, SI .CO 
2.2UF20V 6/91.00 
3.3UF20V 4-61-00 
4.7UF35V 4 61.00 
6.8UF20V 4/61.00 
lOUFMV - 6 .40 
22UF10V - 6 .30 



30UF6V S/61.C0 
33UF1SV $ .50 
47UFZ0V 

esuFiw 

120UFBV 
200LIF20V 
160UF16V 
330UF 10V 



9 .SS 
61.00 
6 ,75 

61.75 
SI ,30 
SI .76 



l*nCk ivilh 1 






14 PfcN HEADERS. 
"lePtNHEADERS . . 

24 PIN HEADERS 

40 PJN HEADERS . , , . 
SOPiNEDGEBOARDCONftf., 
I6P'N EDGE BOARD CONN-. 
SOPtN ANGLE CONN 



3>S1.00 

. 40 

75 

. 1.T0 

. zm 

,. 2.50 
. 3,95 



TRANSISTOR SPECtALS 

2ki3J?)-,HPfitTO-5 I « 

2N«WAPNPGETa-5 3 H 00 

HEPOWH - P^PGETO J I S 

Tipill t .6B 11*145. H X 

2ra2XlN0N SWITCHING POSVEFl . ILK 

.MflF-aweMBPTBAIrtlSTOBWH+ * 75 

7ianiH9H^iO^ «i DO 

3M«0ePNPS-7O3 1100 

nP2«6PNPSi 1 .70 

2Ma2i2i4}>>i|5.TD-ia 7't1.in 

Sf3D7PnPSLTQ-1fl Mm 

'^&S&Km^\0-2 i .so 

a<:je04NFN 5<,TD 92 ^tt oa 

laVXfm^&iTQVi 7.'tl 00 

ZhAIOaPNPS-TQZa 4 S4 

TIPailtNPH'Si 70320 I 40 

TiP32:ap.tfP2iTa.s(> 1 40 

TIPMPNP5( , 1 » 

TIP 121 PWP Si 1^ t .80 

T1P Ul NPN Si U9J 11.W 

aiJX« 11 7B 

E>PS2000 - DUALPOWEFI DAHl . O.V 

MJEaoSOT t .n 



7400 
7401 

7402 
7403 
7*M 
7405 
74» 
7407 
74« 

7*ce 

7410 
7411 

7412 .» 

7413 .36 

7414 .45 

7416 .36 

7417 .35 
7420 ^ 

7425 ..25 

7426 -26 

7427 -25 
7430 -24 
7432 .32 

7437 .32 

7438 .S 
74« -24 
744T .75 
7442 ,SQ 
7*45 .66 
7448 .66 
7447 ,66 
7*48 SE 
74EQ .24 



TTLIC SERIES 

24 



^ 



1.50 



7472 
7473 
7474 
7475 
7476 
7480 
7483 
7485 
748e 
74Sa 
7«0 

748) ,46 

7'KI2 .46 

7483 ,36 

7494 .eo 

74S6 .JS6 

74&3 .60 

74107 .» 

74116 1.W 

74121 -« 

74ra .60 

74123 56 

74126 .48 

741 4S .60 

74148 1,10 

74150 1 10 

74151 .50 
74153 .40 
751&4 1,10 
74155 60 
74167 .50 
74160 66 
741 Gl -65 



74812 
741E3 

74164 

74t8E 

74198 

74170 

74173 

74174 

741 7S 

74176 

74160 

741 62 

74160 

74191 

741«3 

74194 

74195 

74188 

74221 

74273 

74279 

742SS 

74366 

74367 

74380 

75325 

75482 

9601 

K0I2 

«T26 

8T2S 

ffT97 

8T9e 



74LS SERIES 



74L5CO 
74LSOJ 
74LS{9 
74L503 
74JLSCH 
744. 5C6 
741. SOB 
74LSO0 
74LS10 
74LS11 
74LS12 
7*LS13 
74LS14 
TiLSI! 
74I.33J 
7<US2t 
74LS32 
74U» 
74LS27 
74l,S2S 
74LS30 
741.532 
74tS3f7 
741&3fl 
741540 
74L54a 
T4L&*7 
74LSS1 
7*LSti* 
7*L5J3 

74L87« 
74LSO 
74L8S 
?4t.fiS 
74t.590 
f4tSB 
74tS93 
74LS« 
7*LS1ffr 



74LS1CH ,Hp 

74l,£113 -EC 

7tL8ll3 .80 

74LS1U -« 

7413)23 K 

74L5IIS ,» 

74LS13fl .« 

74LS131 .7G 

74LS13a .H 

74L5137 « 

741S13e, H 

744.5139' ,70 

741.3147 l-» 

74LS1S1 ,70 

74LSm 70 

74LS1W 3-40 

74L51H JQ 

74L31M -80 

74LS357 .80 

74LS1EIB .80 

74L&1«1 ,80 

74L51G1 90 

74l51>GZ ,« 

74*.£1'B,3 -90 

741^184 .'90 

74L31B« ,90 

74LSeW \» 

74L8te9 2 50 

74LSire 1.» 

74LS173 ,» 

741S174 JO 

74iS178 80 

74iS1«t 1 » 

741.S190 W 

74LS1i91 .'SO 

74LSID3 -80 

741519] , 80 

74LS1»l 90 
74L51K 90 
74LS18S » 
74LS1B7 ,» 

?4La22l 1 10 



74LK40 1.10 
T4LS34t 1.10 
74I.S34S 1 10 
741.SM3 1,10 
74LS344 LXi 
74LS24& t-7B 
74LS44e » 
74L5ZI17 ,80 
74LS24 1 10 
74tS»1 .70 
74I.SS3 .70 
744.SJS7 .70 
741.S39 ,H 
74iLS3Sfi 1.00 
741.sa«l 70 
74L5273 1,18 
74L.SZ79I 09 
TiLSao 100 

TtLsaa m 

74LS230 » 
74LS23tJ 80 
74I.SSe -« 
74(.SKI 3 00 
741SS3 3 50 
741.S-W JO 
74iS»(l 70 
74LSW 70 
74l.$3H 70 
74LSm l-ZD 
74L5374 t 20 
74LS377 1 50 
74LSM .00 
74(.SfiO 1,10 
741&B3 1,10 
74L81» 3.SI 
7*LSfiS 1 7J 
7'tL8«a I V> 
7<LSft70 1 » 
81L^97 H ZO 
B1LS9B 130 



MULTI TURN TRIM POTS 

500HM 5K 

100OHM ^,4^-- lOK 

5Q0OHM J/S-^.UU 50K 

1000 OHM 500K 



POSTAGE RATtS 
AOD 10** FOfl OflDCRS UNDER J2S0O 
ADD 5% fOR ORDERS BETWEEN t^OO ^ 150 00 
ACiD3^ FORORCEHS ABOVE 150 00 



TCBMS fOa CAMBRIDGE \*ASS SE^D <L»iZ*^ SE*JD 125 fOP Oufi CATALOG 

OP MONEV OROEft VINiMUM TtLEPHOhtE ftATgB^ftG TflAN$l5TQB5 b 

COO »URCHAS« OnOEfl OP CHARQt 12000 fl£CfiffEBS 146 HAMPSMIFf 

VINIWUM JWAIt OflOEfl t5 OO £T . CAMBRIDGE, MASS CHlM 



!ii 

LU 

6 

Q 
1S8 



SOLID STATE SALES 

P.O. BOX 74 D 

SOMERVILLE, MASS, 02143 



TEL (617) 547-7053 

WE SHIP OVER OVER 96% 

OF OUR ORDERS WITHIN 

74 HOURS OF RECEIPT 

TOLL FREE 1.a00-343-5230 

FOR ORDERS ONLY 




Free Buyers Guide 



pages of the latest In components, tools 
and instruments - a must for DESIGNERS, 
Instructors and maintenance engineers. 



.bJ- U.H.F./V.H.F, 
G^XONVERSION KIT 

(* Genuine Mitsumi Tuner & Industriol 
Grade Components 

Cat. 




3 Of nnore$66.95 



•K1 

$99.95 



TOUCH TONE 
TELEPHONE KEYPAD 



XFornner Generated Tone 
Cat. 'CN-23 



$3.95 



COMPONENTS SPECIALS 

DB2SP (RS232 tvlale). - $2.65 ea. 

DB26S {RS232 Female) 43.25 oo, 

1 Piece Hood Stiell Cat. - HS-25 . . . . S 1 .75 ea. 



COMPU T E R/VID E O GAME 

Joysticks Cot * CN-12 2/$ 10.00 

Paddles Cot p- CN-1 1 $5.95/Set 



CALL OUR HOT LINES 

IN CALIF. (714) 527-25S4 

OUTSIDE CAL. (800> 884-8660 

SCR ELECTRONICS CENTER 

6303 Lincoln Ave., Cypress, CA 9O630 
CIRCLE iS OM FREE INFORMSTICmrAHB" 




PREVENT ^ 
HI-TECH ^ 

headaches' 



Our iBolaton 

eluninate 

equipment 

interaction, 

clean up interference, 

curb damaging power line Bpike« and 

lightning bursts. 

ISO-1 Isolator 

3 isolated »ockeli<i quality spike 

suppression; battie protection, . , S76,95 

ISO-3 Super-Isolator 

3 dual isolated aocket«; guppreeeor; 
commercial protection. ...... 1 15.95 

ISO-17 Magniun Isolator 

4 quad ixolated sockeln; euppreiuior; 
laboratory grade protection. . . 200.95 



,^3?i Electronic Specialists, Inc.- 

171 S. MalrvSt-.SO)! 3B9,Nallck, MA01760 

Toll Free Order Des^ 1 -800-225-4878 
MasterCard, VISA, AmerloBn Express 



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WE HAVE QUALITY PARTS. DISCOUNT PRICES AND F/IST SHIPPING! 



TRANSFORMERS 



S.I VOLTS al 750 HA W.M 

■ VOLTS IMH HA »1 J5 

1B.S V. •tJAMPS M.H 

1) V M UC MA I3.U 

II VOLTS ■< 1 AMP U.U 

1( V,C.T. It 1 AMP »g;j« 

24 VOLTS It ISO HA (ii« 

II VCT It 1 AHP M-KI 

UV.C.T. « 1.2AMI> t4.U 



DC WALL 
TRANSFORMER 




ALL Ant 11* VAC 
PIUQ IN 



I VDC •< TO MA tZJO 

B VDC al Hi MA tt.ni 

ia.S VAC ll 10 VA 13^ 

17 VAC al SM MA 14.00 

H VDC It to MA U.SO 



HELPING HAND 

WILL HOLD P.C. BOAHC OR 

OTHER SMALL ITEMS AND 

ALLOW BOTH VOUH HANDS 

FREEDOM TO WOflK. 

too EACH 



2K 10 TURN 

MULT I -TURN POT 

^^ _ SPEGTHOL 

(■Rlt--" HMOD 534-7181 

y*^ tS.W EACH 



VAR ACTOR 
DIODE 

as> — ' 

BB-ia3 aiortl.DO 
33PF IWFORIaO.OD 



Mum- 

SWTTOIES 

3 STATION 

NCN-IMTEnLOCKINO 



3. 2PDT SWITCHES 
EACH OPERATES 
INDEPENDEHTLy 

I*.- BETWEEN 

MOUNTINO CEffTEHS. 
tl.TSEACH 



SSTXnON 
tNTERLOCKMQ 

MADE 6ff ALPS. 
3 ■ 2PDT AND 

J-SPOT 

switch es on rjllv 
imterlcx;kino assembly. 

3Vi' BETWEEN 

MOUNDNQ Of NTERS. 
*3.» EACH 

5 STATION 
NON-irfT^RLOCKING 

SAME AS ABOVE. EXCEPT 

EACH SWITCH OPERATES 

INDEPENDENTLY. 

*a,HEACH 



2 CHANNEL LIGHT ORGAN 



EASILY HOOKS INTO STEREO SPEAKERS 
AND ALLOWS 110 VAC LIGHTS TO DANCE 
WITH MUSIC. TWO SEPARATE 11Q VAC 
OUTPUTS FOR HIGH AND LOW FREQUENCY 
AUDIO SIGNALS USE TWO ORGANS FOR 
STEREO . 

I«J« PER UNIT 

COLORLICHTSTRINOAVAILABLEH.rSEA 





MIKE 
CONNECTOR 



5 CONDUCTOR IN-LINE PLUG 
ANO CHASSIS MOUNT JACK 
TWIST LOCK STYLE. SAME AS 
SWITCHCRAFT 12CLSM. 
}2.50 PER SET 



^ 



CRYSTAL 

CASE STYLE HC33/U 
2 MHZ KM EACH 



TRANSISTORS 



JNTM 

2N22ZZA 

PN1222 

2N2S04 
2N29M 

2N2MIT 
Mil'^lp 
2N30SS 
2N3SW 
IH3KH 



2NU1I1 
2H44a 
2H4SM 
DtJC* 
D44CI 
TIP J1 
TIP 32 
TIP 131 
TIP 12« 



S Ice tl.OO 
I lor 11.00 
« Icr >1.M 
4 i»l tl.OO 
4 tot 11.00 

4 tar t1 .SO 

S2.sa 

SI ,10 

tl.OO 

Slur 11 .00 

5 Ml SI .00 
S for tl.OO 
SlmtljH 

tIJHI 
1 he tl-OO 
.TS 
.TB 
,7* 
.71 

.rs 



MICROWAVE 

TRANSISTOH 

M HF 901 HEDLtCEO TO 
NPN SILICON tZ.DD EACH 



LIGHTS 

GRAIN OF WHEAT 

T1 SIZE ca — 

.126- DIA. (3.1$(nni) 

iioSVOiTt SIsrtl.oo 
RatH; $5ma @ 5 VOLTS 

• Is 12 VOLTS Slertl.OO 
RllM: SSm. @ g VOLTS 

12 Is 24 VOLTt I lor tl.OO 

RitBd: 45mi @ H VOLTS 



T1 SIZE 

WITH WIRE LEADS 

3 to • VOLTS a lor ti.oo 
flilad: Ssma ^ 5 VOLTS 

B 10 11 VOLTB 2 lor t1.M 
RitM: SSma @ B VOLTS 

12 to 14 VOLTS 2 lor 11.00 

Ralad: 45mi @ 14 VOLTS 



SOLDERING 
IRON STAND 



SPRINQ STEEL IRON HOLDER 
ONWEIQHTED BASE. 



tS.O0EACH 




1 2 VOLT A.C. POWER UNIT 




THIS UNIT CONSISTS OF A 12 VOLT 2 AMP 
TRANSFORMER. 1 AHP CIRCUIT BREAKER, 
4 PRONG CINCH JONES SOCKET AND A A 
#IRE A.C. CORO ALL MOUNTED IN AN 
ATTRACTIVE 4V)- « 5»" K 3" CHASSIS BOX. 
GOOD FOR PARTS OR A NICE START FOR 



O.C. POWER SUPPLY. 



ts.M peh unit 



T1- 3/4 SIZE 

WITH 
WIRE LEADS 

.163- DIA. (4.14inm) 

3 Ids VOLT* i lor t1.0D 
Rtlad: 4Sma @ e VOLTS 

1 1« 13 VOLTI 2 hir tt.OO 
Raladj 5Snna @ B VOLTS 

11 H 14 VOLTS 2 lof tl.DO 

Ratod 45mfl @ 14 VOLTS 



NEON W/ RESISTOR 

_ II- - DIRECT 

' ' ■ — OPERATION 

T lor tt.M f ROM 120VOLT 



1S0V INDICATOR 



NEON INDICATOR, RATED 

120 V 1/3 W. MOUNTS IN 

S/tt' HOLE . . . RED LENS. 

TMEACH 

10 FOR tT.OO 

100 FOR tBS.OO 




METERS 

- 20 V.D.C. 

-20 VDC FULL SCALE 
FACEPLUTe 
BATTERY TEST 
SET-UPAS 
INDICATOR 
tS.SO EACH 

1 UA 

2 5/ie-SOUARE 
PANEL METER 
MOUNTS IN 
11/S"HOLE 
tS.H EACH 

. 15 V.D.C. 

THIS 1-1/4- 
SQUARE METER 
MEASURES 
0-15 VDC 
t<.SO EACH 





METAL OXIDE 
VARISTOR 

OiFon 

G.E. f V82ZA12 

SO VOLTS, NOMINAL DC, 

VOLTAGE Vt" DIAMETER 



SWITCHES 

MINI-PUSH BUTTON 



t 



S,P,S,T. MOMENTARY 
NORMALLY OPEN 
1/4- BUSHING 

3MEACH 
10 FOR t3.2J 
IDO FOR tW.OO 
SPECIFY COLOR; 

RED. BLACK. WHITE. 
GREEN, YELLOW. 



KEY **'TCH~_ 

S.P.S.T. ^^ife 

4 AMPS® 115 VAC WF 
KEY REMOVES BOTH ?tfl 

POSITIONS rtn 

I3.S0EA ^ 

fln LIGHTED 

n f PUSH BUTTON 

^PHEO lighted 110 VAO 
10 AMP. S.P.S,T. 

-POWER- PRINTED ON 
FACE MOUNTS IN 
7/S" SQUARE HOLE . 

tlJO EA 10 FOR S13.S0 



FREE! FREE! FREE! SEND FOR 



48 PAGE CATALOG FREE' FREE! FREE! 



POWER SUPPLY 




REGULATED 

FULLY ADJUSTABLE 

3 VDC AT 3 AMPS 

tig.M EACH 



KEY 
ASSEMBLY 

5 KEY 

tl.DO 
EACH 

CONTAINS 5 SINGLE-POLE 

NORMALLY OPEN SWITCHES. 

MEASURES 3 3/4- LONG 

6 KEY 

t1.25 

EACH 

CONTAINS SINGLE-POLE 

NORMALLY OP^ SWITCHES. 

MEASURES 4 1/4- LONG. 



LINE CORDS 



TWO WIRE 

6- IBga TWO WIRE 
3 FOR $1.00 

THREE WIRE 

IS INCH ISoi THREE WIRE 
2 tor t1.D4 

FOOT isga THREE WIRE 
tS.OO EACH 



SLIDE, POTS 

^^ 
100K lln«*r bip« 

1" LONG 

! 5/r TRAVEL Kt EACH 

SOOK llnMU- t«p«r 

2 7/8" LONG 

1 3/4- TRAVEL TS« EACH 

DUAL 100K 

audio taper 

3 1/2- LONG 

2 1/2- TRAVEL t1.50 EACH 



POWER SUPPLY W/ PRE-AMP 




THIS SUPPLY WAS USED TO POWER 
AN B TRACK/CASSETTE UNIT IT 
WILL SUPPLY APPROK 1! VDC AND 
INCLUDES A SMALL PRE-AMP TO 
BOOST SIGNAL LEVEL 
RCA PLUGS FDR LINE IN/OUT 



t4.S0 EACH 



RELAYS 

S VDC RELAY ^fe 

MINIATURE D.P.O.T. Ifl W 
3 AMP CONTACTS 
FUJUITSU » FBH32tDO00 
S1-T9 EA 10 / leOO 



MINIATURE 
e VDC RELAY 

SUPER SMALL 
SPDT RELAY; 
GOLD COBALT 
CONTACTS 
RATED 1 AMP AT 30 VDC; 
HIGHLY SENSITIVE, TTL 
DIRECT DRIVE POSSIBLE. 
OPERATES FROM 4.3 TO 
e V. COIL RES. MB OHM. 

1 3/18" « 13/32" « 7/ia" 

AROMAT • RSD-SV 

tt JO EACH 

10 FOR tl3.S0 



13 VDC RELAY 

CONTACT: S.P.N.C. 
10 AMP ® 120 VAC 
ENERGIZE COIL TO 
OPEN CONTACT . 
COIL: 13 VDC 850 OHMS 
SPECIAL PRICE tl.OO EACH 



4 PDT RELAY 

'14 pin ttylA 

■ 3: imp contacia 

■ Z4 voJt d.C- or 
120 ip^t «-C. coil 

* Us«d but t^jUf toitKl 
tl.70 EACH 

■ pOCiry CQJI vqlUQfi 
LARGE QUANTJTtES AVAILABLE 

■OCKETt FCMt ffCUiV HM 



COMPUTER 

GRADE 

CAPACITORS 

1700 mid. iMVOCti.M 

3 1/J" DIA ■ 4 3/4" HIGH^atk 

SpSOOmld. J^B 

40VDC tl.DO 11 I 

1 3/S" DIA. ■ 3" HIGH | | 

S,400mM. U I 

M VDC tl.5a Cjl 

1 3/8" DIA. " 4 1/4" HIGH 
1S,000 mfd. T5 VDC U.VD 

2 1/2" DIA. ■ 4 1/J" HIGH 

22,000 mid. 15 VDC 

2- DIA ' 2 I/2' HIGH t2M 

2£,D0O mid. 40 VDC 

2" DIA. ' 6~ HIGH tS.OO 

24,000 mid. M VDC 

t 3/4" DIA. - 4" HIGH t3.H 

31,000 mid. IS VOC 

1 3/4- DIA, J. 4" HIGH t2.t0 

72,000 mtd. 15 VDC 

2- DIA. " 4" HIGH tS.50 
liO.OOOintd. itOV 

1 jn- DIA. " 4 1/2" HIGH tl.50 
CtAMn TO FKT CAMCfTOM tH H. 



EDGE 
CONNECTORS 

^ — 

ALL ARE .158- SPACING 

1S PIN GOLD 

SOLDER EYELET t1,TS EACH 

15/30 GOLD 

SOLDER EYELET t2.0S EACH 

18/36 GOLD 

SOLDER EYELET t9.MI EACH 

22/44 TIN 

PC. SrOE; NO MOUNTING EARS 
tZOOEACH lOFORtl&OD 



SOLID STATE 
RELAY 



CONTROL: 

3-32VDC 
LOAD; 10 AMP 

140 VAC »■»> EACH 




MINIATURE TOGGLE 

ALL ARE RATED 5 AMPS O 



S.P.D.T. 

P.C STYLE. JL 

NON-THREADEDML 
8USHING Ci¥l 

7S« EACH I ^ 

10 FDR tJ » figTf 

S.P.O.T. 
(on-off-on) I 

NOh-THHeADEofff 

euSHiNO 

P C STYLE 
7»EACH 
10 FOR t/00 



1 




P C- LUGS, 
TH.REAOED , 
BUSMIhlQ. 
St.« EACH ' 

100 FOR tU.QO 



SWITCHES 

12SVAC 
S.P.D.T. 

(on-oH-on)^ 

SOLOER LUG 
TERM1AIALS 
$1.« EACH 

10 Fan t* 00 

100 FOR JBO «3 

D.P.D.T. 

(on-on) 

30L0£n LUO , 
TERMINALS 
lUOEACH 
lOFORIKOO ' 
100 FOR t1»00 



TOLL FREE ORDERS OML» 
1-800 626.543? 
lOHOERONLVl 

(IN CALIFORNIA 1 8O0.258.5666I 
ALASKA. HAWAII 
OB INFORMATION 

[?i]i J8[! aooo 



■nil ELECTRO 



L.E.D.'S 

STANDARD JUMBO 
DIFFUSED 

BED 10 FOn tl.50 
OREEN 10 FOR t2.00 
reLLOW ID FOR txxw 

FLASHER LED 
J. « VOiT OPMAnOH 
/■I RED JUMBO SIZE 
tt.OO EACH 

Bl POLAR LED 

2 FOR (170 

SU&MINI LED 



II 



I 



.079" ■ ,060- 

RED to FOR t1 .00 

200 FOB Jia 00 

anEEW 10 FOR tt-50 

LED HOLDERS 

TWO PIECE HOLDER a fft 
FOR JUMBO LED — ^£5 

ID FOR BSt 200 FOR tlOOO 



PHOTO-PLASH 
CAPACITORS 

35 MFD 330 VOLT 

1" >5/S- DIA. 
«MEACH... 
10 FOR 14.00 

170 MFD 330 VOLT 

1 1/B- " 7/B" 
2 FOB tl.50 10 FOR 17,00 



MB 



750 MFD 330 VOLT 

2" HIGH » 1 1/4- DIA. 
tlJSEACH lOFORtll.OO 



90SS. Vermont Ave. 



PO BOX 20406 



Los Angeles. Calif 90006 



OUANTiriES LIMITED 
MIMIMUM ORDER S1000 
USA SS 60 SHIPPING 
FOREIGN ORDERS 

INCLUDE SUFFICIENT 

SHIPPING 
rALIF RES ADD 6 1 2 
NO C OO' 



o 
o 

CO 
m 

3Q 



CIRCLE 73 ON FREE INFORMATION CARD 



109 



CO 
o 

z 
o 
a: 

i~ 

Q 

m 

-J 

LU 

6 

Q 

< 

DC 

190 




MORE GAIN 

Than a Varactor UHF Tuner 



15°° SATISFACTION GUARANTEED 

Fraciuancv Rmm 470-899 MHz Ctiannels 
U-B3. Oi)t|iut Channsl 3. Ch ? or 4 Avail. 

PART#B20 ^15°° 

WHAT'S IN IT? 

To make a regular UHF tuner into a GIICO HIGH GAIN TUNEH, each and every one of 

the toUowing steps is painslal^lngly taken by a cenifled tecliriician: 
1. The first thing GILCO does is change the standard diode to a hot carrier dtode. 
Z. The tuner's output is then measured on our JERROLO fieid strenglti meter and com- 
pa red to a computer derived chart Irom which we dele mine the correct value coil to add 
across the IF output for maximum (i!B-p»3ked gMn. 

3. The tuner Is then fed a standard lOdt) 300 ohm antenna Input and wtiife monitorlnsthe 
output on our HEWLETT PACKARD spectrum analyzer, the tuner is tuned to the desired 
channel and Its oscillaior is offset for the desired output frequency as follows: 

Channel 2: 58 Mhz, Channel 3: 63 Mhz, Channel 4: 63 Hhz 
We call this step peaking because ftie tuner's output looks like a peal< on our spectrum 
analyzer and the highest point of Ihat peak is actually adjusted tor the desired output. 

4. The last step is one more measurement on the (letd strength meter which is again com- 
pared to our performance chart to calculate the correct value of the second coll which is 
added to the tuners internal connections. 

This prtjcedure was developed by GILCO and H is our computer derived performance 
charts that make our tuner tjetter, that's because almost Bvsry hinar getx » ditfirtat value 
cut before it's peaked and again a diderent value coil afler it's peaked. The combinations 
are endless and Oie wiy ws detsrmlns the values is oar se^rsl,,. 

GILCO PARTS KIT & 
PRINTED CIRCUIT BOARD 

• Use wtth GILCD 
K!gh Gain Tuner 

• Requires NO Modification to 
Your Toisvlsion 

• Individually Packaged and 
Labeled Parts Save 
Buesswork 

• The only tools required for 
assembly are: screwdriver, solder- 
ing iron, voltmeter. Mo drilling is re- 
quired to the P/C board, Pre-drilled, pm-scremsd, plated ttmugli Wte 

• This kit was designed lo lake ad- ""^^s P/C boird. Alt tiardwam. connscters. 22 
vantage of the GILCO high gain tuner PSff* illvstratsd instmctlen manual, & Silco Hy- 
which means its circuitry is simpler ^^i" '""s''- ^^ assembles in just 4 hours, 
and mare etiiclent than those circuits that require inferior varactor tuners. 

FREE 22 Page Insliuirtior Book included wilh each P/C Board or Parts Kii. This in- 
struction book will guide the builder Itirough every step of the assembly. Naaily every 
page Is Illustrated. V^itti this Instruction Book, estimated assembly time is 4 hours. 




HERE'S WHAT YOU GET FROM GILCO SHT 

Part No. B21 Printad Circuit Boartt 1 / 

t. This Printed Circuit Board uses only one resist. This prevents solder bridges. 
jumper, nOiirs use nhie. 

2. Ttie cumpanertt layout is screen printed 
on the componenl side of Itie P/C board. 

3. The solder side ol Ibe P/C board is 
covered with high temperature solder 
Part No, BZZ Complete Electranic Parts Kit 



00 



4, HowestAdtiiSon: the P/C bmrd h plated 
through the holes, Tbis allows for easier 
and more positive soldered contact between 
the parts and the P/C board, 

$8000 

All resistors (30), Potentlomelers (1-5K, 3-10K). Panel Mount Potentiometer [1 OK), Elec- 
trolytic Capacitors (6), Ceramic and Mylar Disc Capacitors (35). Variable Capacitors (4). 
All Integrated Circuits (7), Voltage Regulator, Heal Sink, Diodes (4), IC Sockets (4 -.8 pin. 
3-14 pin). Power Transforaier p4V. 1A), Coil kit wiDi No. 26 wire (4), Speaker (4". 
3o2.), Standoffs, Coaxial Cable, All Miscellaneous Harware. Etc. All parts are individually 
packaged and labeled. 

All components Including the Wire, Hardware. Coaxial Cable and Heat Sinks are includ- 
ed in the parts kit. This means your assembly time from start to finish is just 4 hours. 



GILCO ACCESSORIES & AMPLIFIER KITS 



#A02 New 2 stage, low noise, 28dbgain, RF Amplifier Kit Kit 'IB" 

#A63 New 1 stage, low noise, 14db gain, RF Amplifier Kit.,. Kit MO" 

GILCO ORDER FORM 

#BM GILCO Hy-Gain Modiflod Tuner *15''*. 

#B21 GILCD Predrilled, Screen Printed, Circuit Soard 

»M2 GILCO Parts Kit (Less P/C Board) , 

tin, W). B22 Complete P/C Board and Pails Ktl (all three) 

tMi Two stage , 28 db gain. Ampiifior Kit 

gim One stage, XHit gain, Ampllfter Kit 

Narre 



Address 
City 



-Stats _ 



-Zip 



'17«_ 

Totil 

Tk 

snip 

Total _ 



Mall Order Only. Send check or money order to: 
GILCO INTERNATIONAL, INC. 

P.O. Box 8817, Cotal Gables, Floiida 33124 
CALL (305) 823-5891 for COD orders PLEASE WRiTEFOR OUR FREE CATALOG 
Shipping Orders under $50 add 10%, Orders <wer $50 add 5%, FL residents +5% Tas 



''i M r T i ri I V IT 'r^ 

iRBB^iSmaHSRiaHHi $ 

f ^BSlHifflillMillHlii^l $ 
lESBEnilH^HBIiHiiPI $ 

$ i^^igmbi:i«».iijj.LyijjAai8^iiii!JHt $ 
mii[m\ f\ I i \i(\iiM\ ff nil if i iWm rfi lUI " 



CIRCLE 11 ON FREE INFORMATION CARD 



The Most Spectacular Deal _ 




SURPLUS 
BARGAIN! 



The OrigiMlu\sh\o Hytype II 
Daisy Printers w/KSR Case 



NOW ONLY 



* READY TO USE 
Limited supply, while they last 

• u5«d, refurbished, tested & fully o perational! 
« capable of matai or plastic wheel Dperation! 

• 35 cttaraders per secondl 

• 1 pitch, 12 pitoti & proportional space pji^ plotting! 

• uses standard "Diatilo" Daisy Wbeelsl 

• we have MAHT ^re parts in stdck! 
. Interface (RS232 i Centronics) available tool p^„ ^ jj; „, ^^^^ j ^^^^^^ 

This printer requires +15VDC and -I-5VDC to operate. 

k M icro-processor irfterfaceboardforRS-232 Ke%f%man 

and Centronics l.'O is available for 'ZSS"" 

External Diablo power supply for the above; , 79 

We OflBf New i Used FLOPPy DRIVES. DISK DfllVES PRINTERS, t, WRE at BrtRGAW PRICES" 
V^rite or Call tor Our LatesI Flyer MOW'!' 




roducts & 



nlimited 



WAREHOUSE 18 Granite St Haverhill Mass 01B3Q 
MAIL ORDERS: Boi 204 Nowlon New Hampshire 03B&S 

'" 617/372-8637,^ 

1 Scrry NO CoUpcT Colt^ 

MiisTofCird & VISA Accpplcd '•'-:^^^' 



CtRCI^ 68 ON FREE INFORMATION CARD 



lamsHij the first name in Counters ! 



9 DIGITS 600 MHz $129i,„^^ 

WIRED 




SPEC1FICATL0N& 



CT' W "^M 1 ytM^Mneti 


iM^JiS 


CT-W KlL« iiuytntu *ir 




ItKt 


IDS.'SIS 


AC.I AC 4dt#ur 


3 55 


*M NwAd r*cl -AC 




AdipUT/CTiintr 


|3"» 


OVi, Mif^p<n>irO>Eii 




tint* but 


49.91 


Eiuinil Irnii biM *pOi 


1*.K 



The CT-90 is the Diost venitilE, feature picked couRtcr Available for lesa 
thu] S300.00[ Advanced design features incMe; thrn selectable gate times, 
nine digits ^te indictlof and a unique display bold function which holds the 
dlsp! tyed court after the input iisnal is removed! Also, BjOmHiTCXOtimt 
base is used which enables easy icro beat calibration ehecks agiiiut WWV. 
Opttanally. tntnteraal mead battery pickexlem»l time base input andMicro- 
power hi^ stability crystal oven time base are available The CT-90, 
peiformijice you can count on! 



Ranges 
SemJUvity: 



Display: 
Time baie: 



20 Hi to 600 MHi 

Less dian 10 MV to 150 MHz 

Less than 50 MV to 500 MHz 

QA Hz (10 MHz range) 

1.0 H2(60 MHz range) 

10.0 Hz (600 MHz range) 

9 digits 0.4" LED 

Standard- 10.000 mHz; 1.0 pinn20-40'C 

Optional Micro-power overwO.i ppm 20^X 

805 VAC® 250 mt 




7 DIGITS 525 MHz $99f j^^^ 

The CT-70 bre&lts the price barrier on lab quality frequency counters. 
Deluxe fetturesauch a:^ three frequency ranfies ■ each with pre- amphficatioi^ 
dual j«lectabte ^te timet, and gate activity indication make measurements a 
snap. The wide frequency range enables you lo accurately measure signals 
from audio Uiru UHF with 1,0 ppm accuracy- that's -0001%! The CT-70 is 
the answer to all your measunmcnt needs, in the field, lab or ham shack. 



SPECIFICATIONS; 


Range 


20 Hi to 525 MHi 


SensiCLVjLy: 


Lew than 50 MV 10 150 MHi 




LcM ihM ISO MV to 500 MHi 


EaalatiQtt 


1.0 Hi (S MHiraoie) 




10.0 Hi (50 MHiringe) 




100.0 Hi (500 MHi ruige) 


Dtsplny; 


7 dibits 0.4" LED 


Time ba£c 


l.OppraTCXOJO-WC 


Power 


12 VAC® 250 ni« 



PRICES 

CT-70 wired I yearwamnty 
CT-70 Kii. 90 day pttu war- 
ranty 

AC-1 AC adapter 
BP-1 Nicid pack + AC 
adapter/ charger 



t9S,9i 

84,95 
3.95 



7 DIGITS 500 MHz $7995 

WIRED 




MINMOO wired, I year 

warranty S7^.95 

AC-Z Ac adapter for MINI- 

100 3.95 

BP-Z Nicad pack and AC 

aibpter/charger 12.95 



Here's a handy» general purpoae counter that provKles most counter 
functii^is at an unbelievable price. The MINI' 100 doesu't have the full 
frequency range or input impedance qualities found in higher price units, but 
for basic RF si^al measurements, it can't be beal! Accurate measurements 
can be made from 1 MHz atl the way up to 5 00 MHz with excellent sensitivity 
throughout the range, and the two gate times let you select the resolution 
desired Add [he nicad pack option and the MINI- 1 00 makes an ideal addition 
to your tool box for "in-th*- field" frequency checks and repairs, 



SPECIFICATIONS; 



Range 

Sensitivity: 

ReuluUoD: 

Display: 
Time base 
Power 



1 MHEto500 MHz 
Uss than 25 MV 
100 Hz(slow^te) 
10 KHz (fast gate} 
7 digits, 0.4" LED 
2.0 ppm 20-40' C 
5 VDC ® 200 ma 



8 DIGITS 600 MHz $159fjj^gj, 



Range: 
Sensitivity: 




SPECIFICATIONS: 




Resolution 



20 Hz to 600 MH£ TbeCT-SO is aversatile lab benchcounter that will measure up(o600 MHz 

Less than 25 mv to 1 50 MHz ^;||, g ^\^\i precision. And, one of iu best features is the Receive Frequency 
^o'h*^* MH*^ ^^ ^^ ^^^ Adapter, which turns the CT-50 uito a digital readout for any receiver. The 

] h H rfioo MH «1 adapter is easily programmed for any receiver and a simple connection to the 

A difliis0 4" [ED receiver's VFO is aHl that is required for use. Adding the receiver adapter in no 

2.0 ppm20-40''C ^^V limits the o$>6raLion of the CT-50, the adapter can be conveniently 

HO VAC or 12 VDC switched on or off. The CT-50, a counter that can work double- duty? 



PRICES: 




CT-50 wired, I yearwarranty 


S159.95 


CT-50 Kii, 90 day parts 




warranty 


U9,95 


RA'l, receiver adapter kit 


14.95 


KA^l wired and pre-pn^i^^un- 




med (send copy of receiver 




schematic) 


29.95 



DIGITAL MULTIMETER $99 fiRED 




PRICES: 




DM-70O wuBd, 1 yearwamnty 


S99.95 


DM.700 Kit, 90 day paili 




w&rranty 


79.95 


AC-1, AC adaptor 


3,95 


BP.3. Nicad pick +AC 




adapter/ chiiger 


19,95 


MP-1. Probe til 


2.95 



The DM'TOO offeri professional quality performance at a Kobbyixt price, 
Fearurcs include; Z6 different ruige? and 5 functions, all trran^cd in a 
convenient. e»y to use formal. Menmrcmctits ate ditpUycd on a large 3iW 
dl^t, M inch LED rea,douT wirK auromaric decimal placemeni, automadc 
polariry, overrtnge indication andoverload protection up to 1250 volts on all 
ranges, making itvirtoally goof-ptoofl The DM-700 looks great, a hartdsotne» 
jet blacky fugfied ABS case wiih convenient reiricEable lik bail mukes it an 
idcai addition to any shop, 



SPECIFICATIONS: 
DQ AC volt! lOOuV to 
Da AC 



KVf 5 ranges 



current 

Resistance: 

Input 

impedance: 

Accuracy: 

Power 



0. 1 uA to 2.0 Amps, 5 ranges 

0. 1 ohms to 20 Megohma, 6 ranges 

10 Megohms. DQAC volts 
0,1% basic DC volts 
4'C oelU 



AUDIO SCALER 



For high resotution audio measimmenta, muldpliei 
UP in Trequency. 

• Great for PL torus 

• Multiplies by 10 or 100 

• 0.0 1 Hz txsolution! 

S29,95 Kit S39.95 Wired 



ACCESSORIES 

Telescopic whip antenna - BNC plug , , , ► S 7.95 

Hieh impedance prober light loadmg 15,9^ 

Low pass probe, for audio measurements > 1S.9S 

Direct proiie^ general purpose usage 1 2,95 

Tilt bait for CT 70. 90, MINl-lOO 3.95 

Cotor bunst calibration unit, calibrates counter 

against color TV signal. 14.95 



COUNTER PREAMP 

Fnr measuring extremely weak signals from 10 to 1,000 
MH:. Small ftiie, powEfed by plug transformer^included. 

• Flat 25 db gain 

• BNC Connectors 

• Great far sniffing RF with pick-up loop 

S34.95 Kit £44.95 Wired 



2575 BAIRD RD, • PEN FIELD, NY 14526 



PHONI- ORIJliRS 

C .Al I 7i6-5K(,-.'!9,';(l 



kttf ..Fund Add S'^ la. ih.pp.ng ■ 
,iTii>ror»>rc<,ma>.inufnD(tlO O.I.IOO Slid t S, COP odd 



CIRCLE 79 OK FREE INFORMATIOH CARD 



at 
m 

CO 

s 

191 



8 

z 
o 

{£ 

H 
O 
LU 
-J 
Ui 

6 

Q 

< 




rhiCKjl »lirv*iWmviiiKauvi>[inJ^r«^v (Nygfi oji* lifflpjir 1q cippf, ««! .Pim nAI t, [Itgi Kr} i>rai^ bf EwMl-wttv >-^ «?lk<^ diKOvni IT«m. rhtiHir* T3C d^vLounray* g'i 4*flV+irt tif rl* SERVICE 
luflo Pffi loU0irtig Ihi porr f^rmtMr AFrpr *T,i.r.qcw ontf^ rcital t,n,>h!>ed.i£eunicibl*.rt^i)ndgif^1fif Mprofirciridiupvni Toihimeiatd odd sh* rw d.uewnl obit it^v Th#h5d,il . „ ' ,„ „„ 

MWN flteeOW » MOHt, Uii: ■■» 3U SI44 iHi.. Ak.. HL, «ll 3ll »■■ *+74}*r Mi 1*4 Tw w4« f*i Bid UT. N(|)mT Jllwf^. ntariirtf Ml, HH »7gi I ibjooliv^ 
"~^ tvv bf (fi«k nwv vdw Mntvr Owpi . V^ 9t < D DfGJT^Kf Y <Stfjlf^AN'T££: -inr ;wri er prodiieti^ pvr£ltQ)«l Itoai Qifi K»r rhoi ^v^r TabtdflHt^vr *ill b* t 5D.(H1.>W.99 

■^■4»^ 4f ittwrAfd Mittun fQ inyt Irvn rKiifl *iin a topy of fflui ihriKv VIDD.Od & Up . 



CHARGES VOLUME DISCOUNT 

Acldf0.7S> 300.00^249.99 L 

. Affd torsos' 3S0.00.f499.V9 L 

. Add tO.JA * 300.00-ff49.V9 I 

MoChinTpv I'iOOO.'OOit Up . I 



192 



CIRCLE 39 ON FREE INFORMATION CARD 




WHLN OIHIIHC ir nttmt. UUt MBg.J4t 1144 |lb., U., Ml., nl 3lf »lT.tft74| Ip (u^ t*^ r^ tfJi' Ui HOt Uf . Vfknwy I> fMlt. TUil Hmi Mil, HN urdi 



CIRCLE 39 ON FREE INFORMATION CARD 



HANDLING CHARGES VOLUME DISCOUNT 



^ ^^ -.did KO 7^ % lOD.DO ^?*'7.*S 

I l3.0OA4V.q4 Atld»0,JO» ^S'O.tri? '^499.99 1 

' 1 JI0.0O.44V. 44 Add 10.3s > aOO.OCi'.'!L999<44 Lev, .^ 

tlOO.OO&LFp N^ChQfgt ^lOOO.OOA U^i If^^ 2^' 



O 

CD 

m 

33 



w 
193 



HIGH QUAUTYVc^55dB GAIN 



MICROWAVE 
TV SYSTEM 

Variable from 1.9 to 2.5 GHz 



{Ttie latest advance 
in microwave 

technology with a 

SNOW-FREE 

PICTURE. 




$ 



Introductory 
SPECIAL 



124 



95 



THIS UNIT COMES COMPLETE WITH: 

• 20" Fiberglass Parabolic Dish 

• Pre-Assembled Probe with 
Down Converter 

• Power Supply and Coax Switch 

• 60' of RG-59/U Coax with Connector 

• Transformer for 75 to 30O Ohms 

• All Mounting Hardware for Fast 
and Easy Installation 

Sefxi Cashieig Check or Money Onier (o- 
I Pefwrwl Chscjo. daw £•£ we«^ to ci«a'^ 



PROFESSIONAL VIDEO. Inc. 

4670 Hollywood Blvd.. Hollywood Calif. 90027 
. 219-0227 



For C.O.D. Orders Call (213) 



352-9681 



CIRCLE 3D ON FREE INFORMATION CARP 



T TEI^EL 



TECHNICAL ELECTRONICS 
YOUR SUPPLY SOURCE WITH 
ASSORTMENTS LIKE THESE: 

LED ASSORTMENT ss LEDS at a pice everyone 

an aHortJ! Red. Green, Vellow, Amber In all shapes 

and sizes. 

Stock No. 10-1501 SE.gspkg. 

SWITCH ASSORTMENT S general purpose 
toggle swilcfies. Includes single, double, and three pole 
switches frorr top manufacturers such as Culler-Hammer 
and others' 
Slock No. 12-2230 $6.95 pkg. 

FOOT ASSORTMENT Plastic, rubber, snap-fl, 
lelt bollom, stud mount, you name it— It's In this 
assorhnenl ol approx. 113& feel. 
Slock No. 49-2390 S2.S5pkg. 

SLIDE SWITCH ASSORTMENT includes 
SPOT and DPDT slides. 10 pieces per package. 
Stock No. 12-1400 Sl.SOpkg. 

ODDS-N-ENDS BARGAIN BOX s pcuM 

Random assortment of good quality components and 
parts. Includes items sucfi as aapaciiors, diodes, motors, 
transformers, printed circuit boards, and much 
much more! 
Stock No. 49-3041 Sia.OOpkg. 

TER M IN AL STRIP ASSORTMENT Halt pound 

of approx. 100 pieces. Randonr assortment of sizes and 

lengths 

Stock No. 49-2400 S2.S5pkg. 



ORtJED TDDAY! VISA, MASTEftCAHI) i COO accapted for 

ptiono orders. Please add S3. 00 lor UPS ground. Salisfic- 
tran guaranteed. Call or write lo^ yoirr f^££ CATALOI3I 

TECHNICAL ELECTRONICS 

Dept. L P.O. Box 2361 
Woburn, MA 01888 (617) 935-1717 



CIRCLE a OH FREE INFORMA TION CARD 



SKVFOX 



StQle-of-lhe-flrt excellence 

SMVfOlt D€S(GN KRfORmNCf KflTllR€S: 

• Ooin 55 cto • ffcqucncv 1.9-8,5 GHZ 

Ronge 55 oniloj moBtnum • Tuning thtmneli 2-6 

• ZO intb Porcitjotit 

(fish cinlenno • 60 K colilc 

• Cotilc odopton. 

mounting Ijjocltcts 

ofid hoFdiuare rniludecl 

• lllusljotcd ifumjitiont 



<f^ o 



Fleceiye movies, special pfesentations and educa- 
tional broadcasls-ALL FREE— witti the SKYFOX 
deep tringe microv^ave receiver for homeowriers 
outside the service area of rnicrovnave TV stations 
SKYFOX receives up to a distance of 55 miles. 
From microwave transnnittefs located on buildings 
or towers in almost all nnedium and large size 
cities. SKYFOX does not receive Caljle TV or 
satellite transmissions. 

SKYFOX I S 79.95 (noi piciured. 2S mite line of sile] 

SKYFOX II S109.95 ms shown 55 mile line of silei 

ORDEHS ONLY: Toll Free 1-800-323/1327 

Foi Information Csll: laiE/SM-OlO^ 

V(sa Maslerchargp ncceptQci COD cash ar Money Orfler 

only When oraercng E>y mail Money Orders or Cashiers 

t>iecK3 onl^ Personal checKs, v^ail 4 weeks lor cner^k 

clearance 

90 cray wrir;.irrj^ » Cyfuiiuofui mousy back guarantee 

S.C.I. Inc. Available by 

657 Academy Drive Wari Otam Only 

Noilhtirook. Illinois 60062 
CIRCLE 55 ON FREE INFORMATION CARD 



Z 

o 

Ui 

_i 
m 

6 

Q 

1d4 



THE SOLUTION COMPUTER 

An Affordable 64K Assembled Computer With These Features: 






SEI, Inc. 

657 Academy Drive 
Northbrook. Illinois 60062 



• Fully compatible with Apple® II + 

• Original design! 

• Fully assembled and tested! 

• Detachable keyboard for easy use. 

• Uses 64K x 1 Dynamic Ram. 

• 9 on board peripheral connectors for expansion. 

• Uses 6502 mpu. 

$g7500 gach (Monitor not included) 
Add §110 for 12" Amber Monitor. 
Add 5% shipping and handling. 

We believe the Solution Computer will be the answer for 

people who realize a great product when they see one. 

Many other peripheral card products are available for 

the Solution Computer, Send for a free color brochure 

today. 

For Information Call [312] 564-0104 

To Order Call (800) 323-1327 

Nnit:: Dut: (o ibi: <l(;tiKitKl of ([lis cwnjiiijur, ih'.livury irill vary from 2-4 vvi;^fis. 
VISA and MASTERCARD acceptable. 

Minimtim ortler Sl.'i.Oll. .'^dd IO"m shippinH on orrlnrs iimim- S3S,00. [Jrders 
over S35.00 adtl-5V llUntiis resiilKnIs iidd B'S. Illinois Stale Tiix, 



CIRCLE 55 ON FREE INFORMATION CARD 



JDR SUPER SPECIALS! 



THE LEADER in 
GOmPUTER 



IKilnlkUiNilM 



BRinas vou these 



OKI MsmssazRs 

MICROPROCESSOR 

COMPATIBLE 

CLOCK/CALENDAR CHIP 

3.95 100/3.25 sa. 

32.768KHZXTAL .95 

OTHER CRYSTALS 

3.57S54SMHZ .95 

5.0G88MHZ 1.95 

ia.43aMHZ 1.93 



78in05 

VOLTAGE 
REGULATOR 

Tl PART#UA78M05C 

STANDARD TO-220 CASE 

5 VOLT AT 500MA CAN BE 

USEDAS7e05TINMOST 

APPLICATIONS 



100/,25EA. 



ORDER TOLL FREE 



[:lilili^l;fl^1ilili] 



800 662-6279 

(CA Rosioentsi 



VtSA 



CONNECTORS 

IDP-1S IDC DIP— PLUG 
IDE-34 IDCEDGE-CARO 
ICC-K DiP-HEADEH" 
ICC-ie DIP-HEADER" 
44P-ST PC EDGE- CARD 
DB2SPC/P VERTICAL 

PC-MOUNT 
OS2SPC,'S VERTICAL 

PC-MOUNT 

TRAHSISTORS 



2N39<I4 TO-92 

2 N 3906 TO-92 

PN2222 TO-92 



100/7.95 
100/7.95 
100/7.95 , 



CERAMIC 

RIOHOLITHIC CAPS 

AT THE PRICE 

OF DISC! 

.lUF-MONO 100/12.DD 

.047UF-HONO 100/11,00 

,01UF-MONO 100/10.00 

PRIME LED'S 

JUMBO RED 100/ 5.O0 

JUMBO YELLOW 100/12.00 

JLtMBO GREEN 100/12.00 

5082-7760 10/ T.95 



SA410 

$11995 

• Va Mb Storage 

• SS/DD 



BLOW OUTSl 
SA 460 

$149^5 



* 1 Mb Storage 

• DS/DD 



• 80 Track — 96TPI 

• 6ms — track to track 

• 5Va" — Standard 
Format 

• 90-DAY GUARANTEE 

SALE ENDS SEPT. 30, 1983 



MICROPROCESSOR 


zaoA-CPU 


3.95 


ZaOA-CTC 


3.95 


zeoA-pio 


3. 96 


ZgDA-SIO/1 


12.95 


Z80A-DART 


6.95 


aOB6 16-BIT 5MHZ 


19.95 


S9A0aCPU1.5MH2 


2.9S 


6EA1D RAM 1.5MHZ 


1.95 


68A21 PIA1.SMH2 


2.95 


66A5Q ACIA 1.5MHZ 


2.95 


6520/6820 PtA 


2,95 



2102L-4 
2111L 
2112 
2114 

2114-25 
TMS4027 



MEMORY 

450NS-LP 

45aNS-LP 

460 NS 

46aNS 

250NS 

260NS 



SPECIAL 
TMS40B0/21O7 



4095 1 1 DYNAMIC 
RAMSTI OR INTEL 
YOUR CHOICE 



.69 



TOMAnroRHIS 



w 



^ 



LIREAR I.C.'S ■ 


DISH CONTROLLERS 

1771 11.95 


LM1S00 1.95 ^H 


1791 18.95 


LM1310 .93 ^H 


1793 18.95 


MC1330 .99 ^H 


CRT CONTROLLERS 


MC1359 .99 ^^ 


DP83S0 19.95 
CHT5027 3.95 


HARDTORHOBUCM H 


CnT5037 9.9S 


COflDUGTIVE FOAM ■ 


DRAM CONTROLLERS 


^H 


8202 17.95 


14" X 26" SHEET 12.00 ^H 


8203 32.95 


12" x 13" SHEET 6.00 ^^ 


3242 5.95 



HOURS 10-3 



JDR Microdevices 

1224 S. Bascom Ave. • San Jose, CA 95128 
(408) 995-5430 • Telex 171-110 



1M3 jpn RR I CRO DEVICES, INC. 



VISIT OUR RETAIL STORE 
HOURS: M-W-F 9-5 T-Th. 9-9 Sat 10-3 

PLEASE USE YOUR CUSTOMER NUMBER WHEH OftDERlUG 
TEHMS: For ihipping Induds $2 Tor UPS Grounct or $3 lor UPS Slue 
Liib«l Atr. Ilftmt over 5 poundi raquJre a^dllional thipplnig charget. 
Forfllgrt prdnrt Jnclude ■ulHcEvnl amount far ihlppLng. Therf I| a $10 
mlntmum ordef, Bty Area And Loi Angelei Countlet add 6'^'« Sale* 
TaK. Other CilllQrnla reiidcnlt add G<^i Safei Tax. We retcrve the 
right to »ub>l(tule manufacturer Not retpontlhle lor lypographlcal 
Arrora. Phcai are lubjecl to change wtthoul notice. We wlU match or 
t>eal any comprtlTor^t price provkdeti M ki noi below our coil. 



CIRCLE 49 ON FREE INFORMATION CARD 



-I9S 



aiea 



64K DYNAMIC 
200 NS 



Tmm20i6 



2KX8 STATIC 
200 NS 



STATIC RAMS 


^ 


2101 


258x4 


(450i») 


1.95 


5101 


256x4 


(450n9) (cmo5} 


3.9S 


2102-1 


1024 I 1 


(450ni) 


.89 


2102L-4 


1024 ( 1 


(450ni) (LP) 


.99 


2102L-2 


1024 1 1 


(250n9) (LP) 


1.49 


2111 


256x4 


(45Dns) 


2.49 


2112 


258 I 4 


<450ns) 


2.99 


2114 


1024 14 


(450nj) 


8/9.95 


2114-2S 


1024 I 4 


<250niJ 


8/10.95 


2114L-4 


1024(4 


(450n») (LP) 


B/12.95 


2114L-3 


1024 I 4 


(300ns) (LP) 


8/13.45 


2114L-2 


1024 14 


(200nt) (LP) 


B/ 13.95 


2147 


m^S X 1 


(SSn.) 


4.95 


TMS4044-4 


40S6 < 1 


|4S0nt] 


3.49 


TMS4044-3 


4D96 1 1 


(300ns) 


3.99 


TMS4044-2 


4098 I 1 


(200ns) 


4.4S 


MK4118 


1 024 I 6 


(250nt) 


9.95 


TMM2Die-20D 


2D4S I 8 


(2D0ns) 


4.15 


TMM2016-150 


2048 t a 


(ISOns) 


4.96 


TMM2Die-iaD 


2048 I 8 


(100ns) 


8.15 


HMei1E-4 


204S ■ a 


(200ns) (cm OS) 


4.75 


HM6116-3 


2048 X 8 


(150ns) (cmos) 


4.95 


HM611E-2 


204S X 8 


(120ni) (cmos) 


8.95 


HM6116LP-4 


2048 X 8 


(200ns) (cmosXLP) 


5.95 


HM61ieLP-3 


2040 X 8 


(150ns) (cmos)(LP) 


6.95 


HM6116LP-2 


204B X 8 


(120ns) (cmtitjJLP} 


10.9S 


Z-G132 


4096 X 8 


(300nj) (Oslat) 


34.95 


LP Low Pow*r 


Qs!a! - Ouasi-Stalic ^ 


DYNAMIC RAMS 




TMS4027 


4096 I 


(250ni) 


1.99 


UPD411 


4088 I 


(300ns) 


3.00 


MMSSaO 


4098 I 


(300ns) 


3.00 


MK41(>8 


8192 X 


<200ns) 


1.9S 


MMS29e 


8192 X 


(25ans) 


1.B5 


4116-300 


10384 I 


{300ns) 


8/11.75 


4116-250 


163S4 I 


(250ns) 


B/11.95 


411E-20D 


16384 X 


(200ns) 


8/12.9S 


411G-150 


16304 I 


(150ns) 


8/14.95 


411G-12D 


1 S3S4 X 


{■t20ns) 


8/29.9S 


2118 


16364 t 


|150ns) (Sv) 


4. 95 


4184-2(10 


65S36 X 


(200ns) (Sv) 


S.9S 


4164-150 


65536 X 


(150ns) (5») 


6.95 




5V single 5 voll supply 




^^" 


EPROMS 




1702 


266 X 8 


(lus) 


4.50 


2700 


1024 X 8 


(45ans) 


3.95 


275S 


1024 X 8 


(450ns) (5v) 


5.95 


2716 


2040 X 8 


(450n>) ($v) 


3.95 


2718-1 


2048 X 8 


(35Qns) (5v) 


5.95 


TMS251S 


2040 X 8 


(450ns) (5v) 


5.50 


TMS2716 


2048 X 8 


(450 ns) 


7.95 


TMS25a2 


4096 X 8 


(450nt) (5«) 


5.95 


2732 


4096 X 8 


(450ns) (5v) 


4.95 


2732-250 


4096 I 8 


(2 sons) (Sv) 


8.95 


2732-200 


4096 X 8 


(2a0ns) (5v) 


11.95 


2764 


8192x8 


(450ni) (Sv) 


9.95 


27S4-250 


8192 I S 


(250ni) (5v) 


14.95 


2764-200 


0192x8 


(200ni) (Sv) 


24.95 


TMS2S84 


3192 I 8 


(4S0nt) (5v) 


17.95 


MC68764 


3192x8 


(450ni) (5v)(24 pin) 


39.95 


27128 


16364x8 


Call 


Cal 


^_^ 


5v - Single 5 Volt Supply 




EPROM ERASERS 






Capacity Inlensity 






Timer 


Chip (uW/Cm') 




PE-14 




6 5,200 


83.00 


PE-14T 


X 


6 5,200 


119.00 


PE-24T 


X 


9 6,700 


175.00 


PL-265T 


X 


20 6,700 


255.00 


PR-12ST 


X 


16 15,000 


349.00 


PR-320 


X 


32 15,000 


595.00 



Z-80 

2.5 Mhz 

ZB8-CPU 
Z80-CTC 

Z80-OAWT II 

ZeO-DMA 1: 
Z80-PIO 

Z80-SIO/0 II 

Z80-SIO/1 II 

Z80-SIO/2 II 

Z80-SIO/9 II 

4.0 Mhz 

Z BOA- CPU ' 

ZaOA-CTC ' 

Z80A-DART 1 

ZaOA-DMA II 

Z80A-PIO ' 

ZBDA.SIO/O II 

Z80A-SIO/1 II 

Z80A-SIO/2 II 

Z80A-SIO/9 II 

6.0 Mhz 

Z80B-CPU 11.95 I 

Z80B-CTC 13.95 

Z80B-PIO 13.95 

Z80B-DAHT 19.95 | 

ZILOG 



8000 



6800 



Z6132 

Lzaeri 



34.95 J 

39.95J 



CRYSTALS 1 


32.768 khz 


1.95 


1.0 mhz 


4.95 


1 .B432 


4.95 


2.0 


3.95 


2.097152 


3.95 


2.4576 


3.95 


3.2768 


3 95 


3.579535 


3.95 


4.0 


3.95 


5.0 


3.95 


S.0888 


3.95 


5.185 


3.95 


5.7143 


3.95 


6.0 


3.9S 


6.144 


3.9S 


6.5538 


3.95 


SO 


3.95 


10.0 


3.95 


10.736636 


3.95 


14.31B18 


3.95 


15.0 


3.95 


16.0 


3.95 


17.430 


3.95 


18.0 


3.9S 


18.432 


3,95 


20.0 


3.95 


22.1184 


3.55 


,32.0 


3.95 



CAT 




CONTROLLERS | 


6845 


14.95 


68B45 


19.95 


H046SD5SP 


15.95 


6847 


11.95 


MC1372 


8.95 


68047 


24,95 


8275 


29.95 


7220 


99 .95 


CRT5027 


39.95 


CRT5037 


49.95 


TMS991BA 


39,95 


,DP8350 


49.95 



8035 
B039 

INS-eOSO 
INS.8D73 

eoso 

B0B5 

80SSA-2 

3086 

8037 

3038 

8039 

8155 

8155-2 

9156 

8185 

8135-2 

8741 

8748 

8755 



74LS00 



8200 



8202 
8203 
8205 
8212 
8214 
3216 
8224 
8226 
3223 
3237 
3237-5 
8233 
3243 
8250 
3251 
8253 
3253-5 
3255 
3255-S 
3257 
8257^ 
8259 
8259-5 
3271 
3272 
B275 
3279 
8279-5 
3282 
8283 
3284 
8288 
3287 
8288 
, 6289 

DISC 
CONTROLLERS 



1771 

1791 

1793 

1795 

1797 

2791 

2793 
1 2795 

2797 

6843 

8272 

LIP07fi5 

MB 8878 
I MB8877 

1691 
L2143 



16,95 
24.95 
26,95 
49.99 
49,95 
54.95 
54,95 
59.95 

34.95 
39.95 
39.95 
29.95 
34.95 
17,95 
18.95 



63000 59. S 

8800 3.S 

8302 7.S 

8803 13.5 

E309E 19. S 

6809 11. S 

8810 2.; 

6820 4.3 

6321 3.: 

6823 14. S 

8340 12.5 

6843 34. S 

6344 25. S 

6845 14. S 

6347 11. S 

8850 3.2 

6852 5.7 

8880 9.S 

6662 11. S 

8375 6.S 

6880 2.: 

8883 22. E 

68047 24. S 

88433 19S 

6300 1MHZ 

88800 10.! 

68S02 22.2 

68S09E 29.! 

68B09 29,E 

68B10 8.< 

68S21 6,c 

68S46 19.< 

68B50 5,t 
63B00 2 MHZ 



6500 



6502 
6504 
6505 
6507 
8520 
6522 
6532 
6545 
6551 

6502 A 
6522A 
G532A 
S545A 
6551A 



UARTS 

Ay3-1014 

AYE-1013 3.95 

AY3-1015 6.95 

PT1472 9.95 

TH1802 3.95 

2350 9.95 

2651 3.95 

TMS6011 5,95 

IM64a2 7,95 

IM6403 8.95 

INS825Q 10,95 

GENERATORS 
BIT-RATE 

11.95 
11,95 
12.95 
16.95 
10.95 
10.95 



KEYBOARD 

CHIPS 

AY5-2376 11.95 

AV5-3600 1 1,95 

LAY5-3600PRO 11. 95 J 



rcONNiCTORS' 

nS232MALE 2.50 

RS232 FEMALE 3.25 

RS232HOOD 1.25 

[S-IOOST 3.95 J 



MC14411 

BR1941 

4702 

COM5016 

COM8116 

MM53D7 

FUNCTION 

MC4024 3.95 

LM566 1.49 

XR2206 3.75 

,3038 3.95 J 



74LSaD 
74LS01 
74LS02 
74LS03 
74LS04 
74LS05 
74LS08 
74LS09 
74LS10 
74LS11 
74LS12 
74 LSI 3 
74LS14 
T4LS1S 
74LS20 
T4LS21 
74LS22 
74LS28 
74LS27 
74LS23 
74LS30 
74LS32 
74LS33 
74LS37 
74LS38 
74LS40 
74LS42 
74LS47 
74LS48 
74LS49 
r4LS51 
74LS54 
74LS55 
74LS63 
74LS73 
74LS74 
74LS75 
741.S76 
74LS78 
74LS83 
74LSB5 
74LS88 
74LS90 
74LS91 
74LS92 
74LS93 
74LS95 
74LS96 
74 LSI 07 
74LS109 
74LS112 
74LS113 
74LS114 
74LS122 
74 LSI 23 
74LS124 
74LS125 
74 LSI 26 
74 LSI 32 
74 LSI 33 
74 LSI 36 
74 LSI 37 
74 LSI 38 
74 LSI 39 
74 LSI 45 
74 LSI 47 
74LS14S 
74LS151 
74 LSI 53 
74iS154 
74LS15S 
74 LSI 56 
74LS157 
74LS158 
74LS160 
74LS181 
74LS162 
74LS183 
74LS164 
74LS1E5 
74LS166 
74LS1E3 
74LS169 
1.74LS170 



74LS173 

74LS174 

74LS175 

74LS191 

74LS189 

74LS190 

74LS191 

74 LSI 92 

74LS193 

74LS194 

74LS195 

74LS196 

74 LSI 97 

74LS221 

74LS240 

74LS241 

74LS242 

74LS243 

74LS244 

74LS245 

74LS247 

74LS248 

74LS249 

74LS251 

74LS253 

74LS257 

74LS25S 

74LS2S9 

74LS2G0 

74LS266 

74LS273 

74LS275 

74LS279 

74LS280 

74LS283 

74LS290 

74LS293 

74LS29S 

74LS298 

74LS299 

74LS323 

74LS324 

74LS352 

74LS353 

74LS363 

74LS364 

74LS365 

74LS38« 

74LS36T 

74LS363 

74LS373 

74LS374 

74LS377 

74LS373 

74LS379 

74LS335 

74LS386 

74LS390 

74LS393 

74LS395 

74 L 9 399 

74LS424 

74LS447 

74LS490 

74LS624 

74LS640 

74LS645 

74 L 5668 

74LS669 

74LS67!J 

74LS674 

74LS682 

74LS683 

74LS884 

74LS6eS 

74LS8B8 

74LS689 

74LS783 : 

81LS95 

31 [.898 

81LS97 

31LS93 

25LS2521 

25LS2589 



JDR Microdevices 

1224 S. Bascom Ave. • San Jose, CA 9S128 
(408) 995-5430 • Telex 171-110 



1963 JDR MICnODEVICES. INC. 



VISIT OUR RETAIL STORE 

HOURS: M-W-F. 9-5 T-Th., 9-9 Sat. 11-3 

PLEASE USE YOUR CUSTOMEft HUMBEft WH£N OFtDERttiG 
TEAMS: For thipping knclude %2 for UPS Ground or S3 for UPS Blu« 
L»t»l Air. Hemp ovtt 5 pound* rtquir« addlMonal ihlpping chargtt 
Foreign ordert jndudt tulld c I enl amount for ihipplng, Therv it ■ $10 
minimum ord«r. Bay Ar'Ca and Loi AngeteiL Counlilei add ti ''>'''* Siild 
T» Olher C»i\tcmi* letldenlt add d^v Salei Tjih. W« rewrve the 
rtgbt Id luballlute manufadurer. Not rtiponi^ble for typographical 
erfon. Prlce*areiub|«ct1ochpnge wlthoul notice We will n^alch or 
beat any con>pelHor's price provided 11 la not below our coit. 



196 



CIRCLE 49 ON FREE INFORMATION CARD 



21ia.so.s8/$995 21ia.so.s8/$1095 



7400 



740(1 
7«1 
7401 
7403 
7404 
7409 
740< 
7407 
I 7401 

740 B 
7410 
7411 
7412 
7413 
7414 
T41S 
7417 
7410 
7411 
7431 
7413 
741t 
741« 
7417 
7413 
7430 
7431 
7433 
r437 
7433 
7440 
7441 
7443 
7444 
7445 
T44S 
7447 
744 B 
74S4 
74S1 
7433 
74S4 
7430 
74T0 
74T1 
7473 
7474 
7475 
7471 
7430 
74»1 
7411 
7413 
7419 
74«t 
74IS 
74«9 
7481 
74«1 
7493 
74«4 
74«9 
T4B9 
74 B7 
74100 
74107 
741I1B 
74110 
74111 
74113 

741 ID 
74121 
74111 
74123 
7411S 
74123 
74123 



,1S 
.1« 
At 
At 
At 
.11 
M 
.It 

.it 

.n 

,1» 

.13 
.30 
.33 
.4* 
.19 
.19 
.1» 
.39 
.39 
.18 
.28 
.28 
.28 
.49 
.18 
.18 
.49 
.18 
.21 
.18 
.49 
.«S 
.08 

.it 

.09 
.88 
.09 
,19 
.13 
.33 
.13 
.13 
.39 
.IB 
.34 
.33 
.43 
.39 
.53 
1,10 

,ts 

M 

,SI 

.3S 

1.13 

as 

.40 
.SO 
.39 

.it 

.99 

.70 

1.79 

1.79 

.30 

.49 

.49 

.$9 

1.99 

1,30 

.IB 

,45 

,43 

.45 

,43 

.55 



74132 
741 JO 
74141 
74142 
74 U3 
741 49 
74147 
7414» 
74190 
74181 
74192 
74193 
74194 
74195 
74193 
74197 
74198 
74130 
74131 
74101 
74133 
74134 
74139 
74133 
741(7 
74170 
74171 
74173 
74174 
T4179 
74173 
T417T 
74173 
74178 
74130 
74131 
74132 
74134 
74135 
74190 
74191 
74192 
74193 
74194 
74199 
74198 
74187 
74188 
74199 
74331 
74146 
74147 
74143 
7414B 
74391 
74398 
74139 
74373 
74273 
74Z7B 
74233 
74234 
74233 
74290 
74293 
74293 
743S1 
74383 
74386 
74387 
74368 
74378 
74 390 
74393 
74429 
74418 
74 4 BO 



CLOCK 
CIRCUITS 

MM6114 4,95 

MM93«« 3.8S 

MMB3T5 4.95 

MM5B1S7 8.98 

MM53174 11.98 

MSMS8S2 6.98 I 



.45 

.50 

.55 

3.39 

1.95 

.30 

1.75 

1.20 

1.35 

.88 

.88 

,85 

1.28 

.78 

.88 

.88 

1.85 

.38 

.89 

.86 

,89 

,88 

,86 

1.00 

1.98 

1.88 

9.98 

.78 

.89 

.89 

.88 

.78 

1.1S 

1.78 

.75 

2.18 

,75 

2.00 

2.00 

1.15 

1.15 

.78 

,79 

.39 

.39 

,78 

.75 

1,39 

1,39 

1,35 

1.39 

1,15 

1,39 

1.95 

.79 

1.15 

1.39 

1.95 

1.29 

.78 

1.00 

3.78 

3.78 

,88 

.78 

.88 

1.28 

.68 

.88 

.68 

,88 

2,20 

1.75 

1,36 

3.15 

.39 

2.55 



LINEAR 



RCA 



I.M301 

LM301H 

LM307 

LM303 

LM308H 

LM309H 

I.M3a8K 

LM310 

LM311 

LM311H 

LM312H 

LM317K 

LH317T 

L.M318 

L.M318H 

LM319H 

LM318 

LM310(I* 

LM322 

LM323K 

LM314 

LM329 

LM331 

1.M334 

1.M338 

LM338 

I.M337K 

LM337T 

I.M333K 

LM339 



,34 
.79 
.49 
.38 
1,19 
1.35 
1.29 
1.75 
.84 
.88 
1.75 
3.35 
1,19 
1,43 
1,88 
1.90 
1.29 
7900) 
1.89 
4.95 
.83 
.85 
3.99 
1.13 
1.40 
1,75 
3,99 
1,93 
(.99 
.99 



LH34a(H 

LM343 

I.M350K 

LM350T 

I.M35B 

LM35B 

LM379 

LM377 

LM373 

LM37B 

LM38a 

LM330N, 

UM391 

LM331 

UM3B3 

LM334 

I.M3B9 

LM337 

LM38B 

LM3B3 

LM3B3 

LM3B4H 

LM39IH 

NEB 31 

NHSS 

NE883 

NES8B 

NEB 81 

NE584 

LMSB5 



w7800| 

,88 

4.95 

4,60 

,89 
1,79 
3,75 
1,99 
2,90 
4.90 

,88 
3 1,10 
1,90 
1,30 
1,tB 
1,B9 

.38 
1,40 
1,35 
1,39 

,58 
4,30 
8,00 
2,39 

,34 

,39 

1,90 

24, B 9 

2,B5 

.38 



LM538 

LM537 

NE870 

Ni:71 

NE593 

LM7QB 

LM710 

LM711 

LM733 

LM713H 

LM733 

LM741 

IM741N-14 

LM741H 

I.MT47 

LM74B 

LM1014 

LM1303 

LM1310 

MC1330 

MC134B 

MC139a 

MC1353 

MCI 371 

LM1414 

LM1453 

LM14B3 

I.M143B 

LM1493 

LM1S93H 



t.49 

,39 

3,99 

2,89 

2.75 

.98 

,75 

,78 

,48 

,55 

.33 

.35 

,35 

,40 

,99 

.53 

1,1B 

1,35 

1.4B 

1,(3 

1.3B 

1.13 

1.33 

6,B9 

1,53 

.98 

.38 

.83 

.35 

3.10 



H ' TO-5 CAN 



LM1I00 

iM1812 

LM1330 

LM1«71 

LM1372 

LM1877 

LM1389 

LM1388 

ULN1003 

LM1377 

LM1B78 

LMIBOO 

LM1B01 

LMIBOO 

LM3B08 

LM3Ba8 

LM3911 

LM3B14 

LM3B19 

I.M3818 

MC4014 

MC4044 

RC4136 

RC4191 

LM419D 

LM4900 

RC4998 

I.M13080 

LM 13600 

LM13700 

K . TO-3 



3.37 
3.15 
3.90 
5.49 
9.49 
3.15 
1.95 
1.75 
1.49 
3.08 
1.28 

,8( 
1.00 

.89 
1.28 

.88 
1.28 
3.98 
3.95 
3.95 
3.98 
4.80 
1.28 
3,98 
1.78 
3.28 

.69 
1.29 
1.49 
1.49 



CA3D23 2,75 

CA 3039 1,18 

CA3048 1.35 

CA 3083 2,80 

CA 3080 2,80 

C A 3085 1,78 

CA3030 1,10 

CA30(1 1.88 



CA 3032 
CA 3083 
CA 3088 
CA 3089 
CA 3093 
CA3nO 
CA3M0 
CA3143 



CA3160 1,13 



Tl 



TL494 
TL498 
TL497 
79107 
75110 
751(0 
75154 
781(3 
78133 



no7i 

TL072 
TL074 
TL081 
TL082 
TL083 



4,30 
1,85 
3.39 
1.49 
1.85 
1.89 
1.85 
1.29 
1.28 
7(494 



75369 
79490 
79451 
79482 
78483 
78484 
78491 
78483 
78483 
.88 



Bl FET 



.79 

1.1» 

1.13 

.73 

1.13 

1.19 

t.F387 



TL034 
LFJ47 
LF351 
Lr353 
LF399 
LF358 
1,40 



1,69 
1.59 
.30 
2.99 
3.49 
1.30 
1.18 
1.89 



1.39 
.98 
,38 
,38 
,38 
,38 
,79 
,78 
,18 



3.13 
1.13 
,80 
1.00 
1,10 
1,10 



74S00 



74SO0 

74S03 

74S03 

74SD4 

74505 

74 SOB 

74303 

74910 

74S11 

74 SI 5 

74S10 

74313 

74330 

74831 

74337 

74S33 

74840 

74S91 

74334 

748(9 

74874 

748(9 

74836 

748112 

748113 

748114 

743124 

74S132 

748133 

74S134 

743135 

74S138 

74S139 

74S140 

748181 

748153 

748187 

74S188 

74S181 

74S182 



,32 
.38 
,38 
.38 
,35 
.35 
.40 
.35 
.35 
.35 
.35 
.35 
.35 
.40 
.83 
.88 
.38 
.33 
.40 
.40 
.80 
1,» 
.80 
.80 
.80 
,89 
1,75 
1,34 
.45 
.50 
,83 
,85 
,85 
,55 
,95 
,95 
,95 
,95 
1,95 
1,95 



74S183 


1.86 


743183 


3.99 


743189 


3,89 


743174 


.35 


748175 


,D( 


743131 


3.85 


74S1(2 


2,85 


743183 


1.89 


7481(3 


8,85 


743134 


1,48 


74S1»( 


1,49 


743133 


1,48 


743137 


1,48 


748201 


8,99 


743215 


7,89 


74S24II 


2,10 


74S241 


2,30 


74S244 


2,30 


7412(1 


,89 


748253 


,99 


748297 


,89 


748253 


,89 


748230 


,78 


743 274 


19,99 


748275 


18,89 


743230 


1,89 


74 S 23 7 


1,80 


743233 


1,90 


74823* 


8,88 


743301 


8,89 


74S373 


2,49 


743374 


2,49 


74S3(1 


7,95 


743337 


1,99 


74S413 


Its 


743471 


4,99 


748473 


4.95 


743474 


4,99 


748433 


15,35 


743570 


2,99 


748871 


2,89 



IC SOCKETS 

1-9) 100 



8 pin ST 


,13 


.11 


14 pin ST 


.15 


.12 


IS pin ST 


,17 


.13 


IS pin ST 


.20 


.18 


20 pin ST 


.28 


.27 


33 pin ST 


.30 


.27 


24 pin ST 


.30 


.27 


13 pin ST 


.40 


.32 


40 pin ST 


.48 


,39 


64 pin ST 


4.19 


Clll 


ST=80LDiRTAIL 


3 pin WW 




,48 


14 pin WW 




,92 


16 pin WW 




,98 


13 pin WW 




,80 


30 pin WW 




,83 


11 pin WW 




1,38 


34 pin WW 




1,39 


13 pin WW 




1,48 


40 pin WW 




1,30 


WW c WIREWRAP 


KplnZIF 


6.79 


C«ll 


14 pin ZIF 


8.89 


Clll 


IBptnZIF 


10.39 


0*11 


ZIF - TEXTOOL 


, (Ztro Iniirlhon ForctL 



VOLTAGE 
REGULATORS 



7808T 

78M09C 

780(r 

7812T 

7815T 

7824 T 

7808K 
7812K 
7818K 
7824 K 

781.09 
78i13 
78L19 

78H05K 
78H13K 



,78 
.35 
,78 
.75 
,78 
.78 

1.39 
1,39 
1.38 
1.38 

,88 

.88 
,88 

3.98 
3,98 



7905 T 
7303T 
791 IT 
791 5T 

7914 T 

7905 K 
791 IK 

791 5 K 
7914 K 

79105 
79L12 
79L1S 

(.M313K 
UAT3B40 



,88 

.85 
.85 
.35 
.83 

1.43 
1.49 
1,49 
1.49 

.79 
.78 
.79 

4.99 

1.95 



c, T ■ To-aio 

U-TO-83 



K • TO-3 



ILED LAMPS! 



R*d 

Qrtin 

yillow 



I.Bft 100<up 
.10 ,03 
,13 
,13 



DIP 
SWITCHES 

4 POSITION ,35 

5 POSITION ,30 
3 POSITION .30 
7 POSITION .35 

.8PO8ITI0N .95^ 



INTERFACE 



INTERSIL ] 


ICL710S 


9.83 


ICL7107 


12.95 


ICL7660 


2.9S 


ICLB038 


3.95 


ICM710TA 


S.SB 


ICM7i03 


15,95 



9000 



LED DISPLAYS 

HP9a83-TT80 ,6" CC 1.29 

MAN 72 ,3" CA .99 

MAN 74 ,3" CC 

FND-38T{389) ,379" CC 1.28 

FND-S0OE503) .5- CC 1.48 

>ND-807 (310) .9" CA 1,49J 



BT16 

ST 38 

3TB9 
I 8TH 

3TB7 

3TB( 

DHB131 

DP8304 
, DS8839 

038835 

MISC. 

UUNZOOS 
I 3241 

3341 

MC3470 

MC3480 

11 COD 
I 99H80 

15 13-001 UP 
L29I3-OOI LOW 



1,9( 
1,33 
,3( 
,33 
,33 
,33 
3,(9 
1,13 
1,33 
,33 

2,48 
7,99 
4,85 
4,85 
9,00 
13.98 
7. 85 
3.98 
3,85 



9318 
8334 
9368 
8401 
3601 
3602 
,36301 




DATA ACQUISITION 

ADC0300 15,99 DAC0303 3,99 

ADC03O4 3,43 OAC101S 3,15 

AOC0308 4,48 OACIOll 9,89 

AOC0317 8,35 MC1408L5 1,85 

,.0 A CO 300 4,35 MC1408L3 3,89^ 





CMOS 




4000 


,39 4917 


1,95 


4O01 


,19 4513 


1,19 


4001 


,39 4531 


,98 


4009 


.33 4533 


1,98 


4007 


.33 4533 


1.95 


400( 


.35 4533 


1,98 


4003 


.33 4941 


2,84 


4010 


.45 4543 


1,19 


4011 


.13 4993 


S,78 


4012 


.15 4555 


,88 


4013 


.33 4898 


,85 


4014 


,79 4981 


1,99 


4015 


.39 4683 


1,89 


4013 


,39 4834 


,79 


4017 


,89 4889 


,79 


401( 


,79 4702 


11,89 


4019 


,39 74C0O 


,39 


4030 


,75 74C01 


.39 


4011 


,79 74C04 


.39 


4032 


.79 74C03 


.35 


4013 


.18 74C10 


.39 


4034 


,39 74C14 


.53 


4019 


.13 74C20 


.35 


4038 


1,89 74C30 


.35 


4017 


,49 74C32 


.38 


4011 


.39 74C42 


1.19 


4018 


,73 74C48 


1.99 


4030 


,33 74C73 


.88 


4034 


1,9( T4C74 


.88 


4039 


.35 74C76 


.80 


4040 


.79 T4C83 


1.85 


4041 


.75 74CS5 


1.95 


4043 


.8S 74C(fi 


.38 


4043 


.85 74C33 


4.90 


4044 


.79 74C)Q 


1.18 


4043 


.85 74C33 


1,79 


4047 


.95 74C95 


.88 


4049 


,35 74C107 


.33 


4(50 


.35 74C1S0 


■5,7S 


4091 


,78 74C1S1 


1.19 


40S3 


,78 74C154 


3.39 


4050 


.38 74C157 


1.75 


40(8 


,39 74C160 


1.19 


4033 


.39 74C161 


1.19 


4039 


,19 74C182 


1.19 


4070 


.35 T4C163 


1.19 


4071 


.13 74C164 


1.39 


4073 


.23 74C139 


2.00 


4073 


.29 74C173 


,79 


4075 


.23 74C174 


1.19 


4078 


.79 T4C175 


1.18 


4078 


.29 74C191 


1.49 


4081 


.29 74C193 


1.48 


40(2 


.29 74C195 


1,38 


4088 


.95 74C2O0 


9,75 


4036 


,95 74CZ21 


1,79 


4033 


,48 74 C 37 3 


1,49 


4033 


2,49 74 C 374 


3,49 


4038 


1,39 74C901 


.39 


14408 


11.39 740902 


.88 


14410 


11.39 74C903 


,88 


14411 


11.39 740809 


10.88 


14413 


13.99 74C806 


,88 


14413 


7.95 74CI07 


1.00 


14433 


4,18 74C303 


2.00 


4902 


,98 74C303 


2,75 


4903 


,89 74C910 


9,89 


4908 


1,95 T4C911 


8,89 


4910 


,88 74C911 


8,89 


4511 


,38 74C914 


1,89 


4912 


,39 74C918 


1,13 


4514 


1,19 74C918 


3,79 


4819 


1,78 74C920 


17,95 


4513 


1.55 74C821 


19.99 


4813 


.83 740922 


4.49 


4913 


.39 74C833 


4,98 


4920 


.79 T4C315 


8,98 


4921 


1.25 74C(39 


T,85 


4928 


1.28 74 C 913 


7,99 




74C(38 


19,85 


^ SOUND CHIPS ■ 


73477 




3,89 ■ 


78439 




«,t5 ■ 


AY3-8910 


11.39 ■ 


AY3-8913 


11.35 ■ 


,.MC3340 


Jill 



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197 



CABINETS FOR 5V4' 

DISK DRIVES 
CABir4ET#1 *29.95 

* DIMENSIONS 8H x 5^ X 3">*i" 

* COLOR MATCHES APPLE 

* FITS STANDARD SV." DRIVES, INCL 
SHUGART 

* INCLUDES MOUNTING 
HARDWARE AND FEET 

CABINET #2 *79.00 

* COMPLETE WITH POWER SUPPLY, 
SWITCH. LINE CORD, FUSE & 
STANDARD POWER CONNECTOa 

* DIMENSIONS; 11» (( 5¥. x3'Wi" 

* +5V @ 1 AMP, +12V @ 1.5 AMP 

* FITS STANDARD 5H" DRIVES 

* PLEASE SPECIFY GRAY OH TAN 
NOTE: PItiit includ« tufflcjint amount for 
•hipping on ibov< lt*mi. 



RESISTORS 

V. WATT 5% CARBON FILM ALL 

STANDARD VALUES 

FROM 1 OHM TO 10 MEG OHM 

50 PCS. SAME VALUE .025 

100 PCS. SAME VALUE .02 

1000 PCS. SAME VALUE .015 



BYPASS CAPS 

.01 UF DISC 100/6,00 

,1 UFDISC 100/8.00 

,1 UF MONOLITHIC 100/15.00 



CONNECTORS 1 


RS:33 MALE 


2. SO 


RS331 FEMALE 


3.2S 


RSI33 FEMALE 




RIQMT ANGLE 5.3S | 


RSI32 HOOD 


1.38 


9-1QDST 


3.3B 


s-toaww 


«.>9 


T2 ptn ST 


s.is 


72 pin WW 


7.»S 


SO pin ST 


4.9S 


44 pin ST 


2.85 


44 pin WW 


4.» 


72 pin SE 


3.95, 



TRANSISTORS 



MUFFIN 

FANS 

NEW UN-USED 

4.ei " Sltuir* T4.95 
3.135" Squ*r< t4,95^ 



OPTO- 
ISOLATORS 



4N3e 

AU2T 

4N2S 

IIN33 

4N35 

4N37 

MCT-3 

MCT-6 

MCA-7 

MCA-25S 

IL-1 

iLA-ae 

IL0-T4 
H11C5 
TIL-111 
TIL.113 



1.00 
1,10 
.M 
1.7S 
1.2S 
1.35 
1.00 
1.50 
4.25 
1.75 
1.25 
1.25 
2.75 
1.2S 
1.00 
1.7S 



m HAVE THE COMPLETE LIKE OF 

DISC. TAHTALUm AND ELECTROLYTIC 

CAPACITORS m STOCK! 



3N«1» 

MPBB1S 

3N2102 

3N221( 

3N221«A 

3N22ig 

3N3219A 

3N2222 

PN2223 

MPS33S9 

1N2484 

3N390I 

3N2907 

PNSgOT 

2M3D55 

30 5 ST 

2N3393 

3N3414 

2N35S3 

3N35«$ 

PN3SSG 

MPS3S3B 

MPS3e40 

PN3543 

PN3844 

MPS3704 



.SO 
.IS 
.70 
.10 
,10 
.10 
.80 
M 
.10 
.21 
.2S 
,90 
.2S 
.125 
.79 
.09 
.30 
.25 
.40 
.40 
,25 
.25 
.25 
.25 
.25 
.15 



MPS370S 

2N3772 

2N3903 

2N3904 

2N390e 

2N4122 

2N4123 

2N424S 

SN43a4 

2N4401 

2N4402 

2N4403 

:N4B57 

PN491t 

2NS0BB 

PNS139 

PN5139 

2N52Q$ 

2N602a 

aN8a«3 

2Ne045 

MPS- ADS 

MPS-AOe 

MPS- ASS 

TIP29 

TtP31 

TtP32 



.15 
1.15 
.35 
.10 
.10 
.IS 
.35 
,2B 
.75 
.35 
.35 
.25 
1.00 
.25 
.25 
.25 
.25 
.25 
.39 
1.75 
1./5 
.25 
.2S 
.25 
.G5 
.75 
.79 



MICROCOMPUTER 
HARDWARE HANDBOOK 

FROM ELCOMP — $14.95 
Over BOO pages of manufacturers data 
stieets on most commonly used IC's. 

Includes: 

* TTL - 74/74LS and 74F 

* CMOS 

* Voltage Regulators 

* Memory - RAM, ROM, EPROM 

* CPU's — 6800, 6500, Z80, 8080, 
808S, 8086/8 

* MPU support & Interface — 
6800, 6500, zao, 8200, etc. 



DISK DRIVES 

TANDON 

TM100-1 SV." (FOR IBM) S8/D0 229.00 

TM1 00-2 5 .- (Fon iBtti) ds/dd 295.00 

SHUGART 
SA 400L sv,"(4o TRACK) ss/od199.95 

SA 400 5%" i3i TRACK) 39/DD 189.95 

SIEMENS 
FD100-8 s 8S/DD ^.„* 

1SHUGARTB01 EQUIVALENT) 1 89.00 

FD200-8 a osroo ^ 

(SHUGART BS-t EQUIVALENT) 239.00 

PERTEC 
FD-200 5y. ss/DD 179.95 

FD'250 SV.-DS/DD 199.95 

MPI 

MP-52 i'A- (FOR IBM) DS/DD 



295.00 

NOTE: Pt«u« includ* tutflcltnl tmount 
lor thipping on Above titmt. 



HEAT SINKS 

TO-3 style 
TO-220 ttyl* 



.95 
.35 



POWER SUPPLY 

MODEL 2 *39" 

MOUNTED ON PC BOARD 

MANUFACTURED BY CONVER 

+5 VOLT 4 AMP 

±12 VOLT 1 AMP 

KOTi: F^lvM« Indudfl lufflclint im^unt for 
thipptng on ibovi ll*m*. 



DIODES 

1NTS1 5.1 volt jintr ,as 

INTSe 12,avoIlz>ntr ,2S 

1N414B (1N914)twltcMng 2S/1.O0 

tM40O4 4aOPIV ractlftsr 10/1,00 

KBPOa 200PIV1,S«mpt]rldaa ,45 

KDP04 400PIV1.5«mpbrld(it ,55 

VM4a Dlp-Brtdg* .35 







D-SUBMINIATURE 


DESCRIPTION 


SOLDER CUP 


RIGHT ANGLE 
PC SOLDER 


IDC 
RIBBON CABLE 


HOODS 


MALE 


FEMALE 


MALE 


FEMALE 


MALE 


FEMALE 


BLACK 


GREY 


ORDER 8Y 


DBxxP 


DBxxS 


DSkxPR 


DBkkSR 


IDButP 


IDSxkS 


HOOO-B 


HOOD 


CONTACTS 9 
15 
25 
37 

SO 


208 
2.69 
2.50 
4.80 
6.06 


2.66 
3.63 
3.25 
7.11 
9.24 


1.65 
2.20 
3.00 
4.83 


2,18 
3.03 
4.42 
6.19 


3.37 
4,70 
6.23 
9.22 


3.69 
5.13 
6.84 

10.08 


1.2S 


1.60 
1.60 
1.25 
2.95 
3.S0 



For order instructions see "IDC Connectors" tielow. 

CALL FOR MOUNTING HARDWARE 



IDC CONNECTORS 



RIBBON CABLE 



CONTACTS 


SINGLE COLOR 


COLOR CODED 1 


r 


10' 


r 


10" 


10 


,50 


4,40 


.83 


7.30 


16 


.55 


4.80 


1.00 


8.80 


20 


.85 


5.70 


1.25 


11.00 


25 


,75 


6.60 


1.32 


11.60 


26 


.75 


8.60 


1.32 


11.60 


34 


.98 


8.60 


1.K 


14.50 


40 


1.32 


11,60 


1,92 


1680 


50 


1.38 


1210 


2.60 


22.00 



DESCRIPTION 


SOLDER HEADER 


RIGHT ANGLE 
SOLDER HEADER 


WW HEADER 


RIGHT ANGLE 
WW HEADER 


RIBBON 
HEADER SOCKET 


RIBBON 
HEADER 


RIBBON 
EDGE CARD 


ORDER SY 


lOHxxS 


IDHxxSR 


IDHiueW 


IDHxxWR 


IDSxx 


IDMxx 


IDExx 


CONTACTS 10 
20 
26 
34 
40 
50 


.62 
1.29 
1.68 
2.20 
2.58 
3.24 


.85 
1.35 
1.76 
2.31 
2.72 
3.39 


1.S6 
2.98 
3.S4 
4.50 
5,28 
6,63 


2.05 
3,28 
422 
4.45 
4.80 
7.30 


1.15 
1.86 
2.43 
3.15 
3.73 
4.65 


5.50 
6.25 
7,00 
7.50 
8.50 


2.25 
2.36 
2.65 
3.25 
3.80 
4.74 



OHDERING INSTRUCTIONS: Insert the number of contacts in the position rnarked "xx" of Itie "order by" part number listed. Example; A 10 pin right angle solder style 
header would be IDH10SR. 



JDR Microdevices 

1224 S Bascom Avenue 

San Jose. CA 95128 

800-538-5000 • 800-662-6279 (CA) 

(408) 995-5430 • Telex 171-1 10 

itiij JDR Microdevices inc 



VfStT OUR 
RETAIL STORE 



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■a ■ ■■ 

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* Applications in file man- 
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APPLE lie 
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64K RAM 

Compatible with 
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$14900 



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leKApple"^ Ramcard 

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i149» 



32K STATIC RAM 




Um 

ISKlMHtKII ilN.H 

IlKlMHlUT .,,-.. :t7.9E 
3!K*WHlKII •! •■■•"'»»«. 

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Biriadw/tllp4rtil<Hmi(n. BO.M 



REmr OF lEU-DUT 



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pFtilio 1 r X 4" bui. 



UiiBncodail 
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1 6 kfly Ktypid M(th 
1-10 kflyi «nd tib, 
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UV "EPROM" 

EFUVSER 

Model 

DE-4 

$89.95 

M*l. 4 EPROM. 
at D tim*. 

Mtxtd 3-ssT isas.oo 




16K Memory 
Expansion Kits 

for App[fl/TRS-80 

apct 411G1BK 

Specify c£>mputBr ^ I ^.C^O 
CALL FOR VOLUME FfllCl^fQ 



ICON FILTER 

Popular 
CORCOM 
;# Filter 

» *4" 

Compttibis Lin* Cord Add ... t3.50 



CORCOM 



9 pes 4164 

D-RAM 

$cnoo 



^50 



AMO MODEM tC 

^^^^P/N AM7910 
^^^BM!* 1^00 Baud 
fPP^ SVC«S 

S|)»£l»l ACP Prlc«*B9 



64K CMOS 



RAMCARD 




$^»>«.,»*n«6iteiC'B 
^ »" •■ filngfi &uj3pty 
AHrnindTeiltd 



'269< 



INTEL ^^8Sf^ 



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Super FaatI 

Super 
Low Power! 

..•1.96 m. 



STEPPER MOTOR 




$3|5 



Opara|*t by tpply^ng 
t2VDC In ona dirao 
!k>r tnd ihtn itvart- 
hg poli'Tlly <Qr iqua^a 
wavaf. Uifli t2VQC, 
Ctock WLie RoEallon, 
Raled 3 RPM it 4 
P.P.S. with ■ 6 dagrta 
ttai^plno uiglt. 



a. 10for$34.0G 



nS232 SIGNAL TESTEII 



COEX RS232 
LIrtoTest&r 

i;7l LEDFrHUlcatoa 



only 

Olhif Stylat AiMAvAllAbia 



•24" 



INTEL CODEC IC 

P/N 291 OA 

For Digital 
Voice 

ForFll1flrP/N25t2A., 



pUUCIi llf 




smtsE 

SUPPRESSOR 

"Surgeonics" 
Power Sentry 

^5 Ajlips ?50 Voile 
tmnsient auppwaslan 

Low PrLea a Ql 



CONNECTORS 



MI26P (R3232) 

00263 Pflmale 

H&id 

&«1 wMh Hood, Stia 

22iM S/T. KIM 

43/^6 S/T,, MOT 

60/1 CO 3-1 CO CofWKttor W/W 

50/1 00 5-1 00 cmwactor &n 



laa 

7.B0 

flJO 
4.65 

3.fl5 



PARALLEL ALPHA HOMERIC 
PRINTER 



^^^■^^^ cotumrte which riave ffiath, alp^ and other notaliona. 
^^^ Each wheel has 1 2 poaltlor.B with position 1 2 blank. 

Poaltlort 1 1 of^ numerteal columns have dscimal point or *, Utlllzea 2.75" 
w(dQ adding machine rape and a dual coior Ink hbtxirv Input dlate parallel 
WfthtourtMtBCDcompemlorcirciiJI. PrtnTrBte,3llnaa per aecond. 
Oparetlr^a voltage 22-2$VDC with r^plcal cycla time of 
340n^Slzee>>i"WK3)^"Hxm"C^ Naw. M.SS M. 



F4 EUflot la.aa 
sau 1I.H 
lae^ i.ra 



M 10^1917 Jig 
I3M44K Vie 
4I1M I.M 

4tio-: s/i2.e9 



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2111 

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1114 

2114L.9 

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21 :i 



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Bfl«P 14H 


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oaoca 


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eKEC IJflM 


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1 c^^'^T'-"^ 


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eigcii.m 


411 


It.M 


e2W 149 


414 


4(n 


g«» 4 90 


1101 


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U19 ST9 


1103 


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(Ml 3T9 


4Cr!7 


l.fl» 


MM 3t9 


4044 


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MM 7M 


40flO 


4«) 


9130 seo 


40«0 


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9140 em 


40M 


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9341BgM 


4118 


1.49 


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4300 


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44CZ 
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4.10 


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9209 2.99 
B212 2.7S 
9214 4W 
9219 2.79 
S22.1 2.99 

vsat 2.99 

9229 399 
S143 9.W 

B2H 14.9B 

BJ!ai ew 

B2S3 11.99 
B2eS 4.K> 



S199MH 

B279 19.WS 
9879 9,90 
WIO 4.79 
U20 BBS 
M21 B.SO 
9029 19.90 
U34 1B.99 
M4I22 9S 
M47 JT.99 

east) 1.29 

«&S2 I.2S 

sBWia.M 

gsg; 10.99 

S87S 9.99 

wa> 2.M 




MSOG 
99X1 
9922 

9KH 

gui 

ZSOiPIO 

MCA'PIO 

ao-oTc 

ZBM-CTC 

UM-OM* 27.99 
ZSO-SIO 24.99 
ZSIU.BIO 29.99 



MOS PROMS 



S7(U(BKxJlf|TS 

2732(4KxATS. 

2?1«^^S1ft*V 

ISKxe^TB 



IM.B4 27«44flOn9}IA7R 
12.M 370«1MOn9h &2Q 
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HMBZCOAQ 14.E0 



tMaZTlQ, aV, 1 2V 1 7.fta UMGS040 
27U. BV, r4B0nS) ££0 



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!5ll4HiBV>LBW (OH 
UCHH71DASaiSxrtrii7B9 
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2]»UnT 

llTllAktnt 

UC14J11 

4m 

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CDU-Sdia 
I13I2SD 

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TTTTTTT 



LOW PROFILE 
SOCKETS (HN) 



Spin LP 
14[l£ilLP 
19 pin LP 
IS pin LP 
EOprnLP 
22 pin LP 
JJptnLP 
29p.nLP 
40 pn LP 



22 
.29 



29 
.39 



.21 
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.27 

.37 



19 

.20 



.24 
.39 



SLWIIEWRAP 
SOCi^TS (GOU) 



if 



9 pin WW 

10 pin WW (Tin) 
14 pin WW 
leplnwW 

19 pin WW 

20 pin WW 
22 pin WW 
24pdnWW 
2a pin WW 
40 pin WW 



t.19 
1.4& 
1J« 
1.90 
2.20 



,63 

.73 



1.09 
1.36 

1.39 
1.93 
2.09 



.99 
1.23 
1.U 



SUPER IC CLOS 



7SH0SK 

7aM0a 

T8M0. 

LM10UH 

LM300H 

U'^ailOK 

LW3MH 

LH309H 

LM»SH 

uwaoroM 
UMjoecN 

LM30eK 

LM310CN 

LM3110TON 

LH312H 

LM317T 

LM3iaCI4 

UMJitWH 

LH3J0K-)O(' 

LM32ar.XX' 1J9 

LM12ai.»<' 1,19 

LMsajK 4«a 

LM324ri 

LM337K 

LMUaK 

IMIMFi 

LM340K-I9;' 

LM340T.I01' 

IM344M 

ua*m 

UdBOK 
LMMiiON 



U,99 
t,4< 
1.48 
299 
.99 
.99 
1.99 
1,BI 
3 29 
.29 
■99 
1.49 
1,2S 
M 
1.79 
1,70 
1 40 
1.29 
1.U 



LM372N 
LM379N 
LWJ77N 

LM3SaCWN 

LM3eiN 

LM3B3T 

LM397N 
LU390N 

NE931V/T 

NEBWV 

NEB90N 

NE9eiT 

NESaSN/H 

NE9e9H/V 

NE997VW 

NES92N 

LM7t>2H 

LM709l*H 

LM710WH 

LM71 1 WH 

LM7HH 

LM723K'H 

LM733WM 

LM739N 

LM741Crt/M 

LM7J1CN-I4 

LMT4TWH 

LW748Nm 

LM7«0CN 

LMiaiON 

M01330 

MC13B0 

MC13ISa 



.99 

BM 

9M 

99 

1.71 

i.as 

1.29 
19B 
1.20 
9.W 

.es 

1.49 
1.99 
3.79 
2.7S 
1.19 
1.79 
t.9B 
1.29 
1.40 
1.99 
3.7S 
.39 
.99 
19.99 
1,29 
1,79 
1,90 
2,79 
1,99 
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,79 
,39 
1,99 
,99 
,99 
1,19 
,33 



,39 
2,9S 

1,90 
1,99 
1,9S 
1,75 



LM1414II 
LM149aCr('l4 

M0i4aeN 
Ll«ti4«gti 

IM19«9N 
LUiaiON 

LMiastw 
LMiaaw 

LMJItIN 
LM2B0(m 
LM2101N 
IM2917N 
OA3013T 
CA30iaT 
0*3021 T 
CA3023T 
0*30397 
0*30397 

t;*304w 

Li)m93N 
O*309gN 
0*30eON 
CM09aN 
LM309<N 
CA30I0T 
CA3081N 
CU092N 
CA30S3N 
CA30MN 

CAMgaN 



CA30>rM 

c*3i!ior 

0A3140r 

CA314«M 

CMisor 

CMieoN 

MC3423)4 

MC34em 

Sa3i24N 

LM3900N 
IMjgOBN 
LM3909M 
LM3914*; 
LM3919N 
IM^ISM 
BC4131N 
RC4139M 
RC4191N 
F)04ie4TK 

rK:4i9BtK 

LLht2[»1 

ULN2003 

eM7B4B0N 

8fl79491N 

3i479492N 

3M7M33N 

3M75454n 

SM75491N 

SKI79^92hl 

9»i7IS4aihl 

S)i79494N 

TUS4CKI 

TUMCP 



B1,W 

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.99 
.99 

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1.90 

.119 

.99 
3,10 
1,79 

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29< 

2,19 

i,n 

3.49 
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2.79 
1,29 
1,29 
1 49 
3.19 
3.19 
4,94 
1,49 
129 
199 
1,90 
1,t!9 

SO 
299 
349 
1,99 
1,30 
1,19 
2,49 
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,99 
1,49 
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339 

91 
1,1« 

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3,79 
3,99 
3,79 
299 
1,10 
3,70 
4,99 
9,40 
1 29 
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.99 

.35 



420 

1,98 



74aCOa .38 

74902 .43 
74S0O 
74304 
7490S 
74S0B 
74909 

7+S10 42 

74ait 42 

74S1G .42 

74320 *i 

74S22 Ai 

74*30 A2 

74332 4S 

74S3a 1.19 

74*40 JS 

74591 42 

74aS4 m 

74995 49 

74S74 ee 

?+S8e .72 

743112 72 

749113 .72 

74S114 ,72 



49 
-M 
92 
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Ji9 



745124 

74S133 
74S134 
/4S139 
749138 
74ai3B 
749138 
74S140 
74S1fi1 
7491*3 
74S1S7 
748109 
749100 
74S174 
74S17B 
749199 
74S1S1 
7491»9 
749199 
74S240 
74S241 
74924J 
74S243 



399 

,S4 
,09 
1,19 
1,(9 
1.29 
1,29 
,73 
1.2fi 
1.29 
1^ 
128 
2,79 
1,49 
1,48 
208 
1,08 
1,08 
190 
S,79 
2,75 
2,90 
2,98 



749244 8209 

74S2S1 1 ,35 

74S263 1 ^ 

748297 1.29 

749269 1,29 

749200 ,7S 

74S290 2,79 

74S297 2,89 

749299 2,96 

745373 3,10 

745374 3.10 
749387 2,76 

748471 7,96 

748472 7.85 
749473 703 
748474 9.06 
749475 9,84 
749570 6.76 
74M71 675 
748572 B,86 
749573 806 
74SMO 2,80 
74^41 280 



DIP 

SWITCHES 



2Poall}on 5 .W 

4 ?<MAiv\ 1.10 

SPH^tkn 1.20 

ar^oaHloo 1.35 




7PaalUQn f1.3Q 

OPoaliipn 1,40 

OPoaLI^ 1.65 

toPo9ltl<»i I.n 



MUFFIN® FAN 




TTts dspflndabEe, low 
cosi, Ijirgest Billing far 
forcofnmerclal coo]|i>q 
applications, 

* iC^cfmlTHalrdrihfVV 
« 4.Qflr'iq.xl.50'[i<np. 

WaEohl' 17&I. 

SPECIAL rURGHUE 
a^ $B.50.i. 



EOUT SPECIALS 



14411 ST.OS 

7-iL&ees 3/1 00 

74LS37T 2/1.B8 

T4tS24l a/1.09 

B2S0 6.05 

6561 RAM 2.96 

LM733CN 3/1 .9fl 

1.M323K 30S 



6571 A SaOS 

3K3 26S2 3^05 

a2fi3 ELKS 
2756 EPROM 206 

1602 805 

ZBOACPJ 4.05 

5«22 6.05 

8«>2 CPU 5 06 



eoeoACPu 

2102 HAM 

4000 RAM 

2732 

UPtHIO 

UPD411 

270e£PflOM B/?fi.05 

2114 a'14.S0 



SI2.BS 5027 CRT Sfl.BS 



1.40 
6.05 

2.aa 

2.0Q 



2aot 

a039 

MMS320 
0131 RAM 
EMM440(2 
10416 



aw 

a05 

B.eo 

1.00 

1.00 
4.BS 



5700 A/E3 2/1S.04 



TOLi FREE 

800-854^8230 

TWI 

910-595-1565 



74001 ,18 

7401 ,2S 

7402 ,22 

7403 .22 

7404 .22 
7409 .23 

7409 .39 

7407 .39 
740> .29 

7408 ,23 

7410 ,22 

7411 ,28 

7412 ,22 

7413 ,38 

7414 ,98 

7416 28 

7417 ,28 

7420 ,22 

7421 ^9 

7422 ,28 
7421 ,28 
7429 ,28 
74» 29 

7427 29 

7428 ,49 
74M ,« 
7432 29 
7437 ,29 
7439 ,29 

7439 28 

7440 IB 

7441 ,78 

7442 57 

7443 ,99 

7444 OB 
7449 ,79 
7449 ,79 
7447 ,96 
7419 .78 

7490 19 

7491 .19 
7463 19 
7494 .19 
7499 ,26 
7490 ,23 
7470 ,29 

7472 ,29 

7473 ,34 

7474 ,34 



7479 t ,39 

7476 .34 

7478 4.eo 

7400 .49 

74S2 89 

7483 ,99 

7499 ,BE 

7406 ^ 

7489 1 ,79 

7490 .38 

7491 ,B7 

7492 ,49 

7493 ,49 
74»4 BS 
7486 Bi 
74WI ,9« 
7497 2,90 
74100 2.80 
74107 ,32 
741 OS 37 
74119 1,99 
74121 ,28 
741 2J 
74123 
74129 
74129 
74121 
74132 
74139 
74138 
74141 

74142 299 

74143 2,99 

74144 2 99 
74149 ,82 
74147 1,99 
74149 1,20 
74160 1,08 
741 SI ,07 
7416! ,07 

74163 ,07 

74164 1,18 
74169 ,76 
74199 ,79 
74167 ,88 
741 6« 1,09 
741S9 2,48 
74100 ,88 



m 

,99 

,31 
,44 
69 

89 

,79 
89 
79 



74191 9 
74192 
74163 
74tS4 

74195 

74100 

74197 

74170 

74172 

74173 

74174 

74170 

74170 

74177 

74179 

74180 

74101 

74192 

74194 2 25 

74118 2,29 

74110 999 

74198 3,K> 

74180 1,11 

74181 

74181 

74183 

74184 

74181 

74180 

74187 

74188 

74189 

74221 

74261 

74273 

74279 

74279 

74263 

74194 3,90 

74269 3,90 

74280 1,19 

74289 

74369 

74390 

74367 

74390 

74390 

74»3 

74480 



,87 
97 
,97 

1,20 
1,99 
1,09 
4,79 
,78 
,98 
,09 
,79 
,76 
1,34 
,79 
1,76 
,71 



1,19 
,89 
89 

OS 
89 
89 
,91 

1,N 
1,39 
1,18 

,96 
1.09 
1.BS 

.71 
1.40 



OS 
09 

.06 

1.46 
1.90 
1.90 






\ 



74Lea3i 



.20 



74LS0t 

74LS1H 

74L503 

74LS04 

74L8aS M 

74LS0$ 

74L909 

74LS10 

74LS11 

74LSI2 

74LS13 

74Lai4 

74L515 

74L350 

74L921 

74L^22 

74LS26 

74LS27 

74L.S1B 

74L333 

74L332 

74LS3J 

74L337 

74LS31 

74La40 

74L342 

74LS47 

74L348 

74L351 

74LSM 

74LS5IS 

74L373 

74LSJ4 

74LS76 

74L379 

74L378 ,46 

74L9a3A .79 

74LS09 1,19 

74LSS6 .46 

74LaB0 .57 

741.SS .76 

741383 ,76 

744386 SB 

74LSae ,89 

7419107 46 

74L31I» ,46 

74L3112 ,43 



4000 8 .36 

4001 .35 

4002 .35 
4000 1.06 

4007 .26 

4008 i.ae 

4000 ,45 

4010 ,46 

4011 ,35 

4012 ,25 

4013 ,45 

4014 1,38 
401B 1,15 
4010 ,B0 

4017 1,10 
4013 ,88 

4018 ,49 

4020 1,10 

4021 ' 1,18 
4G£2 1,19 

4023 :28 

4024 ,76 

4025 .25 

4027 .05 

4028 .16 
4028 1,29 

4030 .46 

4031 3,25 

4032 216 

4034 3.25 

4035 .&5 



,62 
,79 



,95 
,86 



74181138 ,43 

74L8114 ,43 

74LQ122 ,65 

7419123 1,19 

74L8124 1,36 
74LS12B 
74U120 
74L8132 
74LB138 
74L313a 
74L813e 
74L8146 

74L3148 149 

74LS161 ,79 

7419163 ,79 

741.8164 1,70 

741.9196 1 19 

7448198 ,99 

74L81S7 ,05 

7449190 .75 

7448100 1,06 

744S16I 1,16 

7449182 1,06 

7448103 1,05 

7448104 1,19 
7449105 ,60 
7448189 2,41 
7448160 1,15 
74491(8 1,19 
74LS170 1,80 
74LS173 ,08 
74L9174 ,99 
74LS17S ,08 
74LS1B1 220 
74L9190 1,19 
74L9191 1,15 
74481 S2 ,90 
74L31TO .90 
74LS194 1,16 
74LS1S5 .85 
74LS190 ,eS 
7443197 80 
744S221 1.15 
7443240 1,09 
74LSS42 1,00 
r4LS243 
74L3244 



74La24Ba2.20 

74LB247 1.10 

74L924B 1,10 

74LS248 1.18 

74LS251 ^MS 

74L9I63 1.40 

74LS207 16 

74L8251 , 

74L825B 299 

74L8200 .96 

74L82ei 2,48 

74LS2eS m 

74L9273 1.76 

74LS279 4,40 

74LS278 ,58 

74L9203 , 

74LS290 ,88 

74LS283 118 

74L9280 1.10 

74L9296 1.18 

74LS324 1.76 

74LS347 1, 

74LS348 1.88 

74LJ&352 1.19 

74LSS53 1,19 

74L93e3 149 

7443305 , 

74L3909 ,99 

74L3397 ,09 

74L331B , 

74L3a73 199 

74LS374 188 

74L337S , 

74L337T 1,89 

74LS316 1,86 

7443310 , 

74L3390 1.86 

74L330I3 1.86 

74LS386 1,70 

74LE3ee 230 

7443424 2.86 

74L3818 1.76 

7443070 228 

oiLsee 1,98 

81L3S9 180 

aiL397 1,S8 

aiLS9a i,ca 

nQLiiME nmm 

>il TtUfliE 



4037 SI ,B5 

4040 1,28 

4041 1,26 

4042 ,96 

4043 ,B5 

4044 ,99 

4046 1,79 

4047 1,26 
404B ,90 
4D4B ,49 
4090 ,88 

4061 1,10 

4062 1,10 

4063 1,10 
4066 3,96 
4018 1,8B 
4098 926 
4060 1,38 

4000 .76 
4008 36 

4070 AS 

4071 J5 

4072 ,35 

4073 36 
4071 36 

4070 1,28 
4077 35 

4071 35 

4001 ,35 

4002 ,35 
4085 1,95 



40^8 «2,95 

4083 88 

4094 2,96 

4083 2,28 

14400 12,89 

14400 12,96 

14410 12,95 

14412 12,89 

14419 8,96 
14418 4,86 
4001 



4602 
4603 
4606 

4000 
4607 
4S00 

4510 
4511 
4512 
4515 
4510 
4511 
4520 
4669 
4660 
4500 



109 

,09 
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as 


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,55 


7447 


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1,25 


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,80 


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1.00 


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MCI 4040 1,47 


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74LS194A ,50 


74LS398 


2,25 


7808 


,60 


LM323K 


6.95 


CD4025 ,32 


CD4093 .80 


MCI 401 6 ,72 


MCI 4042 1,06 


74LS3S 


90 


74LS195A ,60 


74LS399 


1,26 


7812 


,60 


LM350T 


3,25 


CD4027 ,55 


CD4510 1.17 


MCI 401 7 1.25 


MCI 4043 ,99 


74LS86 


,4S 


74LS196 1,0C 


74LS490 


2,10 


7815 


,ao 


LM350K 


5,50 


CD4029 1.42 


CD4S11 1,20 


MC14018 1.15 


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74LS90 


.45 


74LS197 1,00 


74LS540 


2,in 


7618 


,80 


LM338K 


7,60' 


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CD451S 2,80 


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MC14046 1,67 


74LS91 


1 10 


74LS221 1,25 


74LSS41 


2,10 


7824 


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1,90 


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MC140Z1 1.26 


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.55 


74LS240 1.25 


74LSS68 


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t'L\\i)-i IN TPf/BBHn-|f*,lCii3C:tlfl....7''*3 
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uip Bwn{:;wB-4,^,a uio Pta, .,2/*z 

TV >NC1B&...... lO/H 

IIKIIAHOO rPLWI M™itEfi...*30m*<i 
Vplt#fl#-'J1»t*UHit[;h]nfl r^ijLiHitor- kit 
MSth Adjii«tAbif> OC^Dr^nltAgiB ccmwr*- 
1{». Output vtAtmmt.f24 tn i^OVDC, "^ 
eni. (sqrtJtiLi+tfPp-ufl.priOhinLlinv'^r'Hcn -*19 




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f 
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Tmi: MICRO-MART accepts Visa. MC and laleplwne COD'S. Minimum order SID.DO. Shipping— 
U,S, ordflf^, $2,00. Canada and otlw counlries 63.50 (includes ins.). Shipping r^t^ adjuslad where 
appllcabte. NJ iBsklents add 5% sales lax. 
■ICHO-MRT • W« CENTRAL AVE., WEITFIELD. NJ OTOSO • (Z01) SSt-SOOS 





JBirgaint 1 1 1 
ACAC-t ^^ ACPP-t '<^ 

10 ft. audio extenilan 
cable, $ 1 .50 




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YOUR PARTS SUPERMARKET 

160 2nd Ave, S., 
_ Nashville, TN37201 




ECKA-72 Mlnl-axlil Kit 
$6,85 




UVE1-A Mlnuml 
UHF/VHF combo 
varaotor tuner $9.75 



ECKR-72 Mlnl-lytlc Kit 
$5.85 



Calculetor 
kayboard switch 
$2.25 





■ DP 
S ■ ■ ■ 



SPK-100 PIEZO TWEETER $e,75«acii 
or $4.65 with$1&ardarl 

This quality hi-fi horn is easily instailed 
without crossover. 



ECK-261 $9,35 assorted miniature elec- 
trolytic!, all good useable values, In a 
plastic bag. 2 51 PCS 

1000 ions Isad resistors, ''A and % watt 
assortment $6,76 



Out-of-state orders ouer$15ca(l Toll Free 1-S0O-251-5555 
Tennessee residents and information requests call 1-615-244-4444 



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THE WORLD FAMOUS 



i^DSS 



CATALOG OF 
ELECTRONICS 



• VIDEO 

• TEIECHOUE 

• CABLE 11 
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ETCO ELECTRONICS 
DEPT. 591 

Mailing List Control Center 

BOX64D 

Champlain, N.Y. 1Z91S 

I Enclose {cash 

Please rush postpaid 

□ $1 for 1 year subscription lo the 
world famous ETCO catalog. 
S3 Canadian & Foreign 1 year 
subscription to the ETCO cataitig. 
304 page tiandbook "BUILD YOUR 
OWN EARTH STATION". (TA025) J10.00 
360 pages MASTER HANDBOOK OF 

TELEPHONES. (TA001) 111.00 

FREE - sample copy ot the bargain 
packed ETCO catalog. (USA only) 
Name 



_ Address . 

I City 

I State 

CIRCLE 50 ON FREE INFORMATION CARD 



_Zip_ 



ELECTRONIC KITS 
FROM HAL-TRONIX 

2304 MHZ DOWN CONVERTERS. TUNES JN ON 
CHANNELS 2 TO 7 Of^ YOUR OWN HOME T.V. HAS 
FREQUENCY RANGE FROM 2000 MHZ TO 2500 
MHZ. EASY TO CONSTRUCT AND COMES COM- 
PLETE WITH ALL PARTS INCLUDING A DIE-CAST 
ALUM CASE AND COAX FITTINGS. REQUIRE A 
VARIABLE POWER SUPLY AND ANTENNA (Antenna 
can he a [JiSh type or colfee can type depending on the 
signal strength m your area.) 
2304 MOO 1 (Basic Kit) $19.95 

I Less rasd rit ngsi 

2304 MOD 2 (Basic Pre-amp) S2S.95 

2304 MOD 3 (Hi-Gam Pre-amp) 539.95 

ilr>;ludos case * rillings) 
POWER SUPPLY FOR EITHER MODEL ABOVE IS 
AVAILABLE- COMES COMPLETE WITH ALL PARTS, 
CASE. 'TRANSFORMER, ANTENNA SWITCH AND 
CONNECTORS (Ki() $24.95 

Assembled.... S34.95 

Slotted Mtcjowave Antenna For Above 
Downveners ,,.,.,.„,. 539.95 

PREAMPLIFIERS 

HAL PA- 1 9 — 1 .5 rrthz !o 1 50 rnhz. 1 9db gam operates 
on 3 to 18 volts al tOma. Complete unll $8.95. 
HAL PA-1 .4—3 mhi to 1 .4 ghz. 10 10 12 dtj.gain op- 
erales on 8 to 1 8 volts al 1 (na. Complete unit $12.95. 
[Ttie atwve units are ideal lor receivers, coimters. etc.) 

16 LINE TOUCH TONE DECODE KIT WITH P.O. 

BOARD AND PARTS S69.95 

12 LINE TOUCH TONE DECODER KIT WITH P.C. 

BOARD AND PARTS $39.95 

IS LINE ENCODER KIT. COMPLETE WITH CASE, 

PAD AND COMPONENTS $39.95 

12 LINE ENCODER KIT COMPLETE WITH CASE, 
PAD AND COMPONENTS $29.95 

Complete Sets of P.C. Boafds Available For: Unicorn 
Roboi Project and Heart-A-Matlc Project. 
MANY, mm OTHER KITS AVAILABLE 

b-d M »nlf «t<i^ v I^A-IlC t^ MAnn.uM tnd IFpH m «lli*r 
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DKDRM OVI« t]»»WIU. BE IHir^D PdtPAID EXCEFT 

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PHASOR PAIN FIELD — Paieiited and recently developeU 
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new Ha;et(Jous IF NOT USED WITH DISCRETION. 

PPF-1 PLANS (sold lor animal control) J15,00 

INVISIBLE PAIN FIELD GENERATOR ~ Produces a dl- 
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50 ' Cigarette pack size enclosure is eesily tiidden 
IPG-S PLANS .S7.00 IfUJ-SK KIT 8. PLANS . . J44.50 

iPG-30(a5seni!)lei( [or animal control) $59.50 

PHASORSTUNIBURNINGWANO — Producessullicierit 
electrical energy capable ol durning llesh. irttetided as a persors- 
al tietense tievice 
PSW-3 PLANS tB.OO PSW-JK KITS PLANS SES.SO 



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RUBY LASER RAY PISTOL — Inlensc yisittle red. turns, 
hazardous, with parts sources. 

RUBV PLAffS iinciiioes all part sources) $15.00 

CARBON DIOXIDE LASER — Cenerales 20-40 watts ol 
conimuuus power capable of burning, coiting. tia^ardous. Iwnti 

all part sources) $15.00 

LASER RIFLE — Produces 200-3000 suises ol 30 watt opli- 
cjl energy Portable and easily hand-tteld. 

LR(5-3 PLANS $10.00 

LRG-3K KIT PLANS [minus diode) $129.50 

POCKET LASER — For the beginner, visible red "optical 

version", non-hazardous. 

LHC-2 .. .$5.00 LHC-2K KITS PLANS ..$24.50 

HtQH POWERED PORTABLE ENERGY SDURCE 

FOR LASERS AND MAGNETIC WEAPONS - Exptod- 

ing wires. Shockwave, elc. Miniature size. 

HPS-i PLANS. . . $8.00 HPS-IK KIT & PLANS. . . $«.50 

PARTICLE SEAM WEAPON — PLANS $15.00 



» INFINITY XMTR — Uses leteptione lines tor selecrive home 
H orolliceiisteningwhileawayonbusinessorvacation. 

3lNF-lPLANS.' $15.00 

SEE IN DARK — Long range, total darkness. 

m" SD-4 PLANS $10.00 
LONG RANGE WIRELESS MIKE — Cryslal clear gualily 
— miniature. 

FBT-; PLANS .. . $7.00 FBT-7K PUNS & KIT . . $34.50 

WIRELESS TELEPHONE TRANSMITTER - Long 
tanQe.aulomatic. 
VWPM-5PIANS$1D.OO VWPM-5KPLANS&KII $M.S0 



I Send tor FREE catalog d esc ripton ol above plus hundreds more 
plans, kits and completed items. We accept MC or Visa or when 
ordering, send check or money order We pay shipping charies 
■on orders over SiO.OO. otiierwise include 10% with remittance. 
SEND TO SCIENTIFIC SYSTEMS 

DEPT. R8, eOX 716, AMHERST. N.H. 03031 



CIRCLE 36 ON FREE INFORMATfON CARD 



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POPULAR CHIPS 



LM301 
LM 380 
LM 386 
NE564 
LM 565 
MC 1330 
IVIC 1350 
MC 1358 
MC 1458 
MC 1496 
LM 1889 
7808 
7812 
7815 
7818 
MV2109 
2 N 2222 A 
MCI 349 



.39 

1.25 

.79 

2.50 

.89 

1.10 

1.00 

1.10 

.49 

1.50 

1.95 

.75 

.75 

.75 

.75 

.69 

.30 

1.39 



CHOKES 

.33 uh 33 uh 

.47 uh 100 uh 

15 uh 10 mh 

10 uh 89t each 



ri 



VARI CAPS 
10-60 pf 69<each 
30 - 90 pf 69« each 



h)r%. i 



MITSUMI 
UES A55F 
VAHACTOB TUNER 

CHAN. 14-83 

400 ohm INPUT S17.95 



DELUXE PARTS ASSORTMENTS 



m ^«tlt^or* & TrlrnpQti 

S8 ' wall. S^ resislors & 
6PT-15 lOKlnmpots 1 
each - 51 7S. TOO. 470 
1 SK. 3 6K. 51K. 470K 
13-1 2K 3.220. 3-100K 
6-330. 6-1JK.7-910. 9- 
3 3K. 4 14.J 7K 
;S.2S imch 

nZ Cap*cl1or "A" 
Monolythics . l.aeOpt 7. 
1 rtifd. i 1-ZSmld 
SiEver Micas. 2-TQpl. & T 
eacri ol 43pr. nopf 
560pr l2QQpf. 3t:CN0or 
330OP1 

$5.95 tach 

M3 C«p«citDr "B" 
Mylars 4- 001 2- 047 29- 
01 Radial lytics 3-10 
mfd 15V t-IOOOmtd 
5DV. 1-2200 mtr) 3SV 

Disc Caps i eechot &. 

12. 27. 36. 110. 330pr 2- 
ISOpl. 3-39()L 3-220p( 
and 1 Van Cap 5-35p[ 
£7.50 vac ti 



ff4 Coti a Choket 
1 each of 15. 33, and 100 

lun) micro henries 
ctiokes l-vafiabl# RF 
coil isame as 

i!49A537MPCl 

$3.2SedCh 

ir5 IC'i, 5ackc1i, a ^ml'» 
1 each ol: NE5e4. LM5E5, 
MC133tl. MC135d, 
MC143G. LMieS9, 7812, 
7B1». 2NiS22A. MV2109, 
hut link 2-MC145S, 4- 
1N400S. 4-Spln. M4 
pin. 1-1E. a 1-1Spln 
tack«L 

113,25 «ct! 

H Ml>c. Htrawtn 
LED i holder fuse £ 
holder iinccoid 
gromme! SPST switch 
DPOT switch 2-F61 
conn 4 lugs knob, 4- 
spacers. 6- screws a 
nuts. 2-RG-174 match. 
ing transforjTier w nut 
S5-95 each 



UHFAMPKtT 

25 db gain 

stripline PC board 

using 

|2) BFR-90's 

$9.95 
power supply 
lor above $149 



METAL BOX— 
PRE-DRILLEO 

DIM 10'iW x 4';0 It 3" High 
HOLES: 4\ in back. 1 'i in Ironl 

2'/' in fronL 6 *6 on bottom 
PAINTED $10.95 ea. 10'$99.50 
25.'$223,7S 



NETWORK SALES, INC. 

2343 W. BELMONT AVE. 

CHICAGO, IL. 60618 

312-248-3202 



=* COPYRIGHT 1 383 NETWORK SALES. INC, 



TERMS: Visa, M C . Check, 

Money Order or GOD (add 

S3 00), Min, Order $10,00 Add 

$2.50 S&H tor USA. III. add 7% 

Tax. MAIL ORDER ONLY. 

Pricos subjecL !o cbang« 

wMhoul notice. 

Phone Orders welcome. 

WRITE FOR OUR MONTHLY 

UN-ADVERTISED SPECIALS 



NETWORK SALES, INC. 



RIBBON CABLE CONNECTOR 

These very popular 40 PIN ribbon 
cable connectors are used by a 
number ot irttgs. ol micros tor inter- 
nal board to board terminations and 
I/O port connections. ■ --t 
W/atraln relief $2.50 -^i^ 



40 CONDUCTOR RIBBON CABLE 
gray color 70C/lt. 



MINI FAN 3.125" SO 

40CMF Ut 

115VAC-60tij 

REMOVED FROM NEW EQUIP 
TESTED SB.95 




POWER TRANSFORMERS 



Pri: 115V AC 

Sec: 24 volts @ .350 A 

Dim: 2'A X 1 X 1 H 



$1.S5e3. 10/$15.00 100/$1 25-00 




THUMBWHEEL TRIMMER POTS 
VERTICAL MOUNT 

OHMS 500 IK, 2K, 5K, 10K, 25K 
50K, 100K, 200K, 500K, 1 MEG. 
4/t1.00 100/$20.a0 



MIKI COAX CABLE 

RG-174 SOohm .100 OD 
1Dfeet/$1.00 



SOLID CARBIDE PC DRILL 

#55 1/8 in. SHANK FOR 
USE WITH DREMEL TOOL 
$1.00 — = 



DIP SWITCHES 

Higti quality DIPswItcties mtg. by CTS. 
Available in the lollowing configurations. 



4 pos— 80« 5 pos— aot 

5 POS— BOe 7 POS— 80e 



# 



08-25 S (FEMALE) 

The most popular computer connector 
Mfg. by AMP. .025" gold PC pins 
with mig tioles. 
$1.95 ^ -"■ 



a^ 



BRIDGE RECTIFIERS 

35A 200 PIV $2.00 ^ 
25A 100 PIV $1,50 ". 
3A 400 PIV $1.00 




THUMBWHEEL SWITCH 

$7.95 



BCD 0-9 
W/COMPLIMENT 



(EACH DIGIT ILLUMINATED 
W/LED) 

4 DIGIT 

W/END PLATES 
FOR EASY MTG. 




4 TURN TRIM POTS 
BOURNS ^3339B 

1K-6K R/A-10K 
$1.49 EA- 




RF COIL 

Same as (t49A537MPC 
$1.50 ea. 10/$12.50 



O 

1 

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ID 
g 

205 



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'' WOWiE" AH IHTfflCOH ftua- I 

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m^ar deal dn sophisticatec qc 

ilCflAUBLCKS JtlwavE^ FRQM 

IsCrtVICE. RCFuHBISHED, K r>4EN 

|plAC€D in leifUvE Li-HTIL -mi. 

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|vAe, MJfiT HAS r«c capiHE^rioJi. 
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tAH AC DUPLET ran tQun tv 
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luiXEH Hjn STfllp^lNO IMTeffFEJl- 
IeNCE'i ■ Pll roPl SYNC BE'iNSEH'l 
ItiQh. Lora df nice CIAcu 
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CABLE TV 
Midbond Converter I 

BRAND ME« PKQEluCrilON AEL UHI1 
tAKEl TMt HJDDEN CHAhWtl.1' flU I 
MiDBAN'D And moves THE^ vo 

chaknel» t-is swutch select^ 

'HORtlAL' Ort -HiDSAHD' JUST Pi ' 
liN LINC WITH VflUft CABI,E AJ<0 
SWITCH BACK (k faniH •!» VA-C Wr 
OMTLET FDp TOUP Tv OKit TH? 
COMMCcnoilX tH II DUT iTVE-PALL 
3lZt \i h K * i/t X Z" Hi«H 



W^^ 



POWER 
TRAMSFORMER 



PAI II5/?J0 VAC 
SEC I ;>VCT «T i AMPS 
S£CZ ISVCT AT 7 AAIPS 



3 -3/* « 3-1/4 » 3-U! HI6H 



.95 



I QPtAr TnA>imFonHEP fqpi 

9 I llV PCQULAtetl SUPPLICS- 
I THIS II A CDQt PDltMNO 
[ a^ALITY UM3T IMCIVICUALL^ 

^BDXED T-OaaO HI G L0 




DIGITAL COFFEE TIMER' 
CLOCK As^y, U-FlX-EM. 

1^00 .^^ _ tO/'25 

HEPE ! Twi aot^ FPou Those hcw coffee 

MAKCA9 WFTH A CDHPWTEP -BBAlh' THAT 
DIQITAlLV CDHT.P01J THE COrfEE HAKIMa 
A P£nfECT EXAttPLE OF WDMQAV WC^RN^HO 
•lams - 5 OUT OF 10 HAVE SOLDEP iMpllTS 
CUT KDIvS, tTC- EAJV TO PtPAIJ! STiJfF THE 
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LED OlSPtAv, *a»tR XFUR, tv SPOt PClat, ETC 
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THESE AEL (ONvERTLpS Accept 
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to CkiANNCf.! 2, i. OH A (SET TO S '| 
AS PLCElveoi INPUT IS ■K'ltBUi' 
OP 2lE-?«A yni. INSERTION LOSS 
4 ( DB HAn., INPUT LEVFI. -19 JQ 
+ Zi DBMV, FOR USE ON 7» OH ■ 
CABLE ST^rCHS WE PPOVIDf 
SCHiEMAtlCa AHO OPERATION NOTEi 
'OUANTITIE& LIMITED 



'^Cf26D 

400 V 

12 AMP 

SCR 



NI-CAO BATTERY PACK 

[ CHEjIiT for portable PflOJECrS, RCCEAFI, AND 
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1$ VDC UHir HfASURES 4 X Z 
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If rOU'RE NOTONOUff M4IUHG LIST, VOU'HE HISSIKS OUT- 
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^HY NOT SEND FOR OUR CATALOE TODAT--- IT'S FREE * 



ACTIVE FILTER PC BOARD 



I CONTAINS TWO LHJIO'S LTD Mhi qw, jdv/, %i.t* 

I CDHFIOUBCD AS A FORTH ORfiER L4HEAR 
1 PHASE LOW PAdi rH-TCH USiN4 1% FJLU CAPS ARD 
RESISTORS 50PRT, «0 CKO*CE OF FPEOUEWCV 1WE 
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[ DATA SHE^T - l^E aMCLUOEl BOAPP LAYOUT, SCHEMATIC,* fORMULAJ J 
FOR BOTn WAXLUALLV FLAT PCSPOMaE OR LINEAR PHA3.E OP^AATEAH 




<>l 



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lAMONOBACK 

ELECTRONICS COMPANY 
PO BOX 12095 Depi 102 
SARASOTA, FLA. 33578 
Phone Orders (813)953-2829 

COMTIhlENTAt. US ACH) * I $0 EOfl tHE f^fiS^ LB 
AkCi iO* fOFT EACK ADDITbONAL LB. 
WEST COAST ADS *E.flC FOR THE FlftS? PCl^HO B ' 
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A WHOLE NEW WORLO DF TV YIIWIHO WITH TUIAI. 
HEW HCDCl CVUJO, 4Q OHAHKCt CABLE TV COKVERTER 

I R*<:(iT* All II-* t>TfW CABl^ TV "UiOBAHD" ( WJPERBAHO 

CMAHMELS *n yOvt UmF DrAL 
I Elimi.lAlM (h4 l^H4 lev '|niir>a «r iHtlng. TNt trUiffl lalui 
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^ pP(ti«1of tini TKflTM «ntf ctMHMli 1h*ni |p ittndird UHF 
li 1h4l ■rr)' Ml CAn 



' ^-^= ' A UUSJ FCH VSOEOrTAPIHa FKOU CAK-f TVI 

Thi lyllafTi alUvn t^gu la progrun bclh j»:f tpiiy TV daoxi*' 
eibl* ehh^idi r«r l<|ilna w> mny VCfl — -nfil' 



No» ^28.95.. 



NOW AVAILABLE 

NEW TUNEABLE DELUXE MODEL CVJ-MKB 



>34.95^ 



■OT- 
IS dflM UHF VAGI AXTENNAS 




SPEAKER 
MIWET 

ubnifli f« E7h»e 



'10.95. 
'8.95. 




OUJLITir 

POWER TFUUISFORHEHS 

2^V CT, *H) jnA. 

•3.19». ID w'2.7Su 

W M mpn '2.25 ••. 



Wow Hstlt in SICCA! 

symvo UMF VASACTon tuners 

75 Ohm liiput - 45 MKl Ojtpul 
ForCninnalt 14 . B3 



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ANAMElM.CALtFOHNEA 92806 1 

PERSONAL CHECKS HELD FOR CLEAftAhlCE - NO MINIMUM ORDER 



ALL PREPAID OnOEFIS a LBS Oft LESS MUST mCLgDE IS W SHtPPJNG 4 HANDLING - &HII>PED SAVE DAY RECEIVED 



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MICROWAVE HIT 



$1495 

COMPLETE 

. P.V.C. 
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• 2 - 2SC2369 
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• Resistors 

• Capacitors 

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10 " FIBERGLASS 
SCREW DRIVER 

with Plastic Handle 




3/$loo 



Latching Relay 
$495 

24V Coil 
llOV @ 15A D.P.S.T. 




Resulated 
Supply 5V, 2A 

w/Transformer and 4" x 2,3" Heat Sink 

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(Plm Sh^>pin^liaiKffing) 

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Computer 
Products, 



VISIT OUR RETAIL STORE 



2100 DE LA CRUZ BLVD. 



SANTA CLARA, CA 35050 



35 

39 

80A 

85A 

86 

83 

55 

56 

85 

02 

05 

12 

14 

IS 

24 

26 

28 

37 

38 

43 

SO 



74LS0O 

74LS01 

74LS02 

74La03 

74LS04 

74LS06 

74LS0e 

74LS10 

74LS11 

74LS12 

74LS13 

74LS14 

74LS15 

74LS2D 

74LS21 

74LS22 

74LS26 

74LS27 

74LS2S 

74LS30 

74LS32 

74LS33 

74LS37 

74LS38 

74LS40 

74LS42 

74LS47 

74LS48 

741^49 

74LS51 

74LS54 

74LS55 

741.S63 

74LS73 

74LS74 

74LS75 

74LS76 

74LS78 

71LS83 

741385 

74LS8e 

74L990 

74LS91 

74LS92 

74LS93 

74LS95 

74LS96 

74LS107 

74LS109 

74LSn2 

74 LSI 13 

74 LS1 14 

74 LSI 22 



8000 

4.9S 8251 



5,96 
3.89 
589 
2496 
34,95 
7.76 
8.75 
29.t» 
2735 
3.46 
1.7« 
3,7S 
1.89 
2,19 
1.79 
3.34 
19.00 
439 
4.39 
10.49 



8253 

825a-5 

8255 

825&6 

8257 

8259 

8272 

8276 

8279 

82795 

8282 

8283 

S284 

8286 

8287 

8283 

82^ 

8741 

S748 

8755 



4,39 

eJ9 

7,89 

4.39 

5,19 

7.89 

&B5 

39.00 

29.00 

8.89 

9.39 

6.49 

8.49 

549 

6.49 

8.49 

24,96 

39,00 

34,96 

1495 

29.95 



DISC 
CONTROLLERS 



INTERFACE 



1771 

1791 

17«3 

1795 

1797 

6843 

8272 

UPD765 

1691 



15.» 
27.95 
29.95 
49.96 
49.95 
32,95 
39.00 
34,95 
17.95 



BT26 
8T28 
8T95 
8T96 
8T97 

erras 

DM3131 
DPK304 
DS8835 
DS8S36 



1.65 
1,95 
.95 
,95 
,95 
,95 
Z90 
2,26 
1.89 
.99 



EPROMS STATIC RAMS 

1TO2 Ins 2.95 jtoj 450ns 1.80 

Z70B 450ris 2.98 21021-2 250n5LP 1.44 

2716 460ns 3.90 2111 450ns 2.48 

2716-1 350ns 5.90 2,-14 450ns ,74 

2532 450ns 535 2114L4 450rsLP 1B4 

2732 450n5 4,90 2114L,3 300nsLP 1*» 

2764 450ns CALL Z114L-2 ZOOnsLp 1,9* 

DYNAMIC RAMS TMS4044^ «Ons 3.15 

TMS4027 2S0n5 ,79 TMS4044^ 300ns 3.45 

LPD411 300ns 2.SS TMS4044-2 200n» 3B9 

MM 5280 300ns 2,89 MMIIS ^9 9.69 

MK4108 200ns 1,74 TMM2016 2C0na 4.15 

MM 5238 2S0ns 1.74 TMM2016 150ns 4,89 

«W7 wn^. -.w HM6116-t 200ns 5.90 

I?ifi w^l riii HM6116^ 150ns 6.90 

j]]e 7^1 ^rr HM8116-2 120ns 8.95 

tVm m^l CALh Z6132 300ns 3Z95 

4164 150n}. CAU- LP ^ LOW POWER 

5V4" DISKEHES 
ATHANA OR NASHUA 

SSSD 18.95 

SSDD 22.95 

DSDD 27.95 

BULK SSDD SOFT $1.65 EA 



CRYSTALS 



EPROM ERASERS 

HOLDS 15 EPROMS 
ERASES IN 20 MINUTES 

59.95 



CONNECTORS 

RS232MalB 3,00 

RS232 Female 3.50 
RS232 Female RA 4.95 
RS232Hood 1.20 



74LS0O SERIES 



.23 
.23 
.23 
.23 
.23 
.23 
.23 
.23 
.?5 
.25 
.39 
.39 
.29 
.23 
.23 
.23 
.29 
.23 
.29 
.23 
.25 
.49 
.29 
.29 
.23 
.43 
.49 
,74 
,74 
.23 
.23 
.28 
1.23 
.37 
.33 
.37 
.37 
.47 
.68 
.67 
.37 
.53 
.87 
,53 
.63 
.73 
.37 
,37 
.37 
.37 
.37 
.37 
.43 



74LS123 
74LS124 
74LS125 
74LJ5126 
74LS13Z 
74LS136 
74LS137 
74LS138 
74LS139 
74LS145 
74LS147 
74LSi48 
74LS151 
74LS153 
74LS164 
74LSi55 
74LS156 
74LS167 
74LS158 
74LS160 
74LS161 
74LS162 
74LS163 
74LS164 
74LS165 
74LS166 
74LS16a 
74LS169 
74LS170 
74LS173 
74LS174 
74LS175 
74LS1B1 
74LS1B9 
74LS190 
74LS191 
74LS192 
74LS193 
74LS194 
74LSia5 
74LSl9e 
74LS197 
74LS221 
74LS240 
74LS261 
74LS242 
74LS243 
74LS244 
74LS245 
74LS247 
74L^4a 
74LS249 
74LS261 



.77 

2,88 

.47 

,47 

.57 

,37 

.97 

,53 

53 

1.13 

2,47 

1.33 

.53 

53 

1.88 

.67 

.67 

63 

.57 

B7 

.63 

.67 

.63 

.67 

.93 

1.93 

1.73 

1.73 

1.47 

.67 

.63 

.53 

213 

8.93 

.87 

.87 

.77 

,77 

.67 

.67 

,77 

.77 

.87 

.93 

.59 

.97 

.97 

127 

1.47 

.73 

.97 

.97 

.67 



74LS253 
74LS257 
74LS2S8 
74LS259 
74LS260 
74LS266 
74LS273 
74LS276 
74LS279 
74LS280 
74LS2S3 
74LS290 
74LS293 
74LS295 
74LS29S 
74LS324 
74LS352 
74LS3S3 
74LS363 
74LS364 
74LS366 
74LS366 
74LS367 
74LS368 
74LS373 
74LS374 
74LS377 
74LS37S 
74LS379 
74LS3B5 
74LS386 
74LS390 
74LS393 
74LS3» 
74LS399 
74LS424 
74LS447 
74LS490 
74LS666 
7413669 
74LS670 
74LS674 
74LS682 
74LS6B3 
74LS684 
74LS6S5 
74LS688 
74LSeB9 

81LS96 
81LS96 

81LS97 
81LS98 



.57 

.57 

.57 

273 

.57 

.53 

1,47 

3.33 

.47 

1.96 

.67 

J7 

.87 

,97 

.87 

1.73 

1.27 

127 

1.33 

1.93 

.47 

.47 

.43 

.43 

1.37 

1.37 

1,37 

1.17 

1,33 

1.88 

.43 

1.17 

1.17 

1.17 

1.47 

2.93 

J5 

1.93 

1j67 

1.87 

1.47 

9.63 

3,18 

3.18 

3.18 

3.18 

2J8 

3.18 

1.47 
1.47 
1.47 
1.47 



oKau 



6502 
6504 
6505 
6507 
6520 
6522 
6532 
6546 
6551 



6S00 
1 MHz 



5.26 
6BS 

7.60 
9.86 
3.95 
4.96 

5,95 
16.95 

10.95 



UPGRADE 
YOUR 
APPLE 

or 

TRS-80 

4116 200ns 

CALL 



32768 KHi 


1.90 


1,00 Hz 


4.50 


1.3432 


4.50 


2.0 


3.90 


2.097152 


3.90 


2.4576 


2.69 


3.276S 


2.69 


3,579545 


2.69 


4.0 


2.69 


50 


2.69 


5.0888 


2.69 


5185 


2.69 


6.7143 


2.69 


6.0 


2.69 



6,144 

65539 

8,0 

10,0 

120 

14.31818 

150 

16.0 

17,430 

18.0 

13.432 

20.0 

22.1184 



269 
2.69 
269 
2.69 
269 
269 
269 
Z69 
2.69 
269 
2.69 
2.69 
2.G9 



SPIN 
14 PIN 
16 PIN 
18 RN 
20PfN 
22 PIN 
24 PIN 
28 PIN 
40 PIN 



10 SOCKETS 

ST 

.10 

.12 

.15 

.20 

.26 

,25 

.26 

,36 

.40 

St=Sol(lertail 
W/W^WIrewfap 



.49 
.50 
.57 
.85 
.99 
1.30 
1.40 
1.50 
1.80 



Z80 



SERIES 



£5UHz 



ORDER TOLL FREE 

(800) 538-8800 
(800) 848-8008 

(CALIFORNIA RESIDENTS) 
ALL MERCHANDISE IS 100% GUARANTEED 



Z80CPU 


3.36 


280-PIO 


3.36 


Z80CTC 


3,35 


2B0.DMA 


12.49 


ZSO-DART 


14.96 


zso-sforo 


16.95 


ZBOSIQfl 


18.95 


Z80«IOf2 


16.95 


zsftsiora 


16,95 


4.0 MHi 




ZBOA-CPU 


4.90 


Z80A-P1O 


450 


ZBOA-CTC 


4.90 


Z80ADMA 


21.95 


Z80A-OART 


15,95 


ZSOA-SiOffl 


20.95 


Z80A-Siai 


20.95 


ZBOASiC^ 


20.95 


ZS0A-S10S 


18.« 


6.0 MHz 




Z80B-CPU 


14,95 


Z80B-PIO 


12,95 


zeoacTC 


12,95 



ZILOQ 

Z61:S 32,95 

28871 38.96 



APPLE 
JOYSTICKS 



APPLE 

SUPER COOLING 
FANS 

49.95 

WITH SURG PROTECH 

69.95 



APPLE 

PADDLES 

9.95 



APPLE* II 

COMPATIBLE 
DISK DRIVE 

225.95 

CONTROLLER CARD 
79.95 



Computer Products, Inc. 



2100 De La Cruz Blvd. 

Santa Clara, CA gsOSO 

(80O) 538-8600 

Calif. Residents (600) 646-8008 



STORE HOURS: 

MON-FRI 8:30 A.M.-5:30 P.M. 

SAT 10:00 A.IVI.-3:00 P.M. 



S;>NnAM£Hi(;ftfiD 



[masler charge] 



TERMS; For shipping include $2.00 for UPS 
Ground. $3.00 for UPS Blue Label Air. $10,00 
minimum order. Bav Area residents add 6V4% Sales 
Tax, California residents add 6% Sales Tax. We 
reserve the right to limit quantities and substitute 
manufacturer. Prices subject to change without 
notice. Send SASE for complete list. 



\ 



CIRCLE 99 ON FREE INFORMATION CARD 



SPARTAN 



Klt.'ctrll[liL'^i Ini'. 



CO 
O 

o 

H 

o 

m 



CTC9R 




$139.95 



(516) 499-9500 

6094 Jericho Tpke. 
Commack, N.Y, 11725 



__Philips Remote 
Cable Converter 



> Micto tvntiMf technoiQQy a QutrM CDniroii«] 
IC s Idc^ in picUiFB A [KrFrfl[>l drill * fid ihan.n«i 
SBlKtiDFu « Pr&pnminible L<.[nE on. £ c-tf • ?4 
h>3ur LE{] digiui ctock • rivfiMte cMnnnI rwrn^ 
Biv & reoli [Hu5 sHn • WifdEss rijrH] »ie'd 



CABLE TV ACCESSORIES 

2a«CQUotar - - - - ?-B5 



4 Ht couptsr^.... 
FConrxcton 



Matchng iransroniw.^ 
TVQionw Switch.., 



VHF-UKFAWp.2SCe„. 



Crimp Tool tof F Cain ... 



7Q0' CORDLESS PHONE 

FM duplex circuiiry. Last . ^ 

number redial. Base can 
signal remote to pick-up. 
Rectiargeatile ni-cad batteries, 
S89.9S 



Mifra 
400 



SGL WABER $35.95 



Protect your 
computer and 
electronic equipment 
from voltage spikes 



DG115P 

DQ115S - 

(6 Oullet) |3*(a' 
S«.95 




WINEGARD FM CAR 
ANTENNA BOOSTER 

AiT-[i^r«E FM ndiD iigruils in ivi<r*oc qI lOdS [9 
:mtii imcmvn ar ndlo fKtfvtloit Hid minds 
fi-nge Id illo« [KHtef Sdtction (ri slatiMi. 
i^itch ind indiutor hihn atsic^ea Eo kiwtr edgi 
gl #iiri. ^^ Ciblfr witti UDHKrtrii plu^t presided. 
IrastlUs m rtxiuln Gml for wntJcw intmnas 



REFURBISHED 
MONITORS 

9", 12", Commercial 
Grade as low as 



$39.95 



tt 



10KIVI Cordless Telephone 

I ,; Model 5500M (modified) 

$3ZS.D0 

External Antenna required 
For export use only 



BECKMAN 
CIRCUITMATE 20 

© funcsions and 30 ranges - 
Diode'transistor test iunction - 

auto-polartty, auio-zero, and 
auto-decimal - 10 Amps AG and 

DC Current Capability - Transistor 
Gain Test {hFE) - Conductance 




$64.95 



Jerrold 36 Channel 
Remote CATV 

Converter 

w/on/off Fine Tuning $94,95 
58 Channel Wireless $109.95 





4 Chan net VHP to UHF 
f^..T~ Block Converter 

"" 28.95 Ea. 

24.95 4 & up 

Deluxe Version - Features line tuning knob, 
matctling X former a 2 cables S38.95 



Dealers Welcome 

V<s,i MC BAC Amox AH ilDOue 
Volume piiccs inciuoe 4°n c^sli d)scounl 

Discounts t- D moriev older ciiick Add for 

;..;n Om, pS 00 S'-.Wrnd _^ ^^^ ^^ 



Mm Order S25 00 ' ' 
ir31errra1it9nal shipping AcJd'l 
Prices suBicct iq crianje 
Aitfiour notice 
COD 2 00 Ex1r.i 
'AdtJ'l srtipping 
toj mantrois 



76.00 to 250 00 
251t>0lo 500m 
501 00 10 75000 
rsi 00 10 1 000 DO 
Ovw {(XKlfW 



o 
o 
< 

DC 

2oa 



(516) 
499-9500 



MonTh 
9-8 



Tu WF 
9-6 



ADVERTISING INDEX 



RADIO-ELECTRONICS does riot assume any responsibility for errors that may appear 
In the Index below. 



Free Information Number 



Page 



80 

73 

SI 

56 

89 

60 

41,78 

67 

98 

77 

S 

7 

35 

IS 

34 



22,81 



CIRCLE 47 ON FREE INFORMATION CARD 



68 

21 

84 
93 
95 
39 
11 
53 
99 
26 
14 
59 

e 

72 

33 
4j 
15 
SO 
31 
40 

76 

71 
10 

75 
16. 
85 

94 

20 

23 

29 

49 

4 

63 

83 

4S 

44 

93 

66 

12 

46 
17 

90 



100 

52 

69 



37 



Active Electronics,-..--..,,--.- ------.200 

Advance Electronics 28. 29, 86 

Advanced Computer Products 20] 

All Electronics 189 

AMC Sales 48 

AP Products 25 

Ariiona Electronic Surplus 206 

BBC Metrawatt Cover IV 

Beckmsin Instruments 46, Cover III 

Beta Electronics ..-- ---.- 207 

BF Electronic Supermarket 179 

BK Precision Dynascan 62 

Byte-Rj-te 1 10 

Calvert 45 

Cambridge Learning-...--- 134 

C D Electronics 60 

CEI 26 

Chaney Electronics --..-,.,-202 

CIE, Cleveland Institute of 

EiectrOBics 52-35 

Circuit Specialists 204 

Command Production ,,,,.,,.., ,20 

Communications Electronics 2, 13 

Components Express 200 

Computer Products 

Peripherals -,,„, 190 

Cooper Tools Cover II 

CRT Factory 179 

Decoder Distributors..,,, ,, 17S 

Diamondback Electronics 206 

Digi-Key 192. 193 

Digitron 190 

Direct Video Sales 50 

ENikay Computer Products, 207 

Electro Industries 50 

Electronic Parts Supply 20 

Electronic Rainbow , 117 

Electronic Specialists ,,,., 188 

Electronic Technology 

Today 60 

Electronic Warehouse 61 

Electronics Book Qub 177 

Enterprise Deveiopment 50 

ETCO 205 

Etronix ,,,. 48 

Firestick Antenna „ 48 

Fordham Radio 47, 49 

Formula International 136, 1S7 

Gileo International ,,„,,-.,,„, ,., 190 

Gladstone Electronics 3S 

Global Specialties 21 

Grantham College of Engineering 15 

Hai-tronii 205 

Heath 85, 91 

Hickok Electrical Instrument , 44 

res Computer Training 40 

Illinois Audio 46 

ISCET 30 

Jameco Electronics 184, 185 

JAN Crystals 46 

Javanco ,, --204 

JDR Microdevices 195-199 

Jim-Pac Electronic Components 31 

J W Electronics 178 

KCS Electronics 202 

Kikisut 9 

L.I. Public Wholesalers .....200 

McGraw-Hill Book Clubs 142-145 

Mcintosh Labs 42 

Memo Tech.— ,.92 

MFJ Enterprises 208 

Micro Management ,,. „,„,.. 60 

Micro-Mart 204 

Microsignai 60 

Multidyne Electronics „„ 179 

Netronics R D Ltd 134 

Network Sales 205 

New Horizons , 51. 146 

Newtone Electronics 40 

NRI Schools 16-19, 39 

NTS Schools 34-36 

Pacific 1 179 

PAIA Electronics 42 

Panavisc ,...,,.., ,..„...-- .33 



9 

97 

30 

24 



61,86 

79 

42 



27 
96 
87 
32 
95 
36 
25 
55 
54 
82 
23 
43 
47 

3S 

8 

74 
64 
62 

65 
19 
91 
13 



Pbilips-Teth Electronics 202 

Pomona Electronics, 3 

Professional Video 194 

Protecto Enterprise 78 

Radio-Electronics Reprint 

Bookstore 38 

Radio Shack 74. 183 

Ramsey Electronics 191 

RCA ,.. 27,32,33 

RCA Distributors Special 

Products..,,, -- 24 

RCA Technical Publications 41 

RCD 57 

R.F. Electronics ,206 

R.I.S.T. 178 

Robotics Age ,..,. 134 

Sams Books 101-109 

Satellite Receiver Systems 179 

Scientific Systems - 205 

SCR Electronics Center 188 

SEI 194 

Simpson EiectrLC ,.22 

Sintec 30 

Solid State Sales 188 

Soltec 1 

Spartan Electronics 20S 

Symmetric Sound Systems 173 

Taft Electronics 69 

Technical Electronics 194 

Tektronix -7 

Traband Electronics --. 179 

Triplcft 43 

T.V. Products 178, 179 

Ungar 179 

Vector Electronic 166 

VIZ Manufacturing 1 1 

Westech „.....,.. 202 

Zenith 23 



ACTIVE 
RECEIVING 
ANTE 



Gives excellent reception, 
50 KHz to 30 MHz. 



New MFJ -1024 Active Receiving 
Antenna nnojnts outdoors away from 
electrical noise for maxirnurr signal. 
Gives excellent reception of 50 KHz 
to 30 MHz signals. Equivalent to wire 
fiundreds of feet long. Use any SWL, 
MW, BCB, VLF or Ham receiver. 

High dynemic range RF amplifier. 54 
in. whip. 50 foot coax. 20 dB attenuator 
prevents receiver overload. Switch be- 
tween two receivers. Select auxiliary or 
.active antenna. Gain control. "ON" 
'LED, Remote unit, 3x2x4 In. Control, 
.6x2x5 in, 12 VOC or 110 VAC with- 
optional adapter, 
IVlFJ-1312. $9.95. 

'-i-jqa 





129 



Order from MFJ and try tt. It not delighted, 
return within 30 days tor refund (less siiipping). 
One year unconditional guarantee. 
Order today. Call TOLL FREE 800-647-1800. 

Charge VISA, liflC. Or mail check, money order. 
Write for free catalog. Over 100 products. 



CALL TOLL FREE 800-647-1800 



Call 601-323-5869 in Miss., outside continental 
USA, tech/order/repair info. TELEX 53-4590. 

ENTERPRISES, 
INCORPORATED 



MFJ 

^Bw 494, Ml»8ls»lppl SUt», MS 39762 
CIRCLE 66 ON FREE INFORMATION CARD 



Our new 4% digit DMM 
only acts ^pensive. 




Now you can get iVz digit resolution plus an 
unmatched combination of high performance features 
for just $239. 

Performance Power 

The new Beckman Model 4410 DMM gives you 
precise readings with resolutions down to 10 micro- 
volts and 10 nanoamps. The 4410 offers you 0.05% 
basic Vdc accuracy plus true RMS Vac capability for 

accurate readings of 
-■■ll complex waveforms. 
Add to this RF shield- 
ing and high input 
impedance, and you 
have superior ^Vz 
digit performance. 
Easy to use 

Built-in lOA 
ac/dc capability elim- 
inates the need to 
carry an external 
shunt. For fast 



flBSlgfi 




continuity tests, thelNSTA-OHMS® continuity 
indicator works at the speed of a glance. For even 
more convenience, the single rotary switch makes 
function and range selection simple and sure. 

Built to last 

Packed with overload protection, the 
4410 is designed for reliable service. It withstands 
1500 Vdc or 1000 Vac on all voltage ranges as well as 
6kV transients. A rugged 2A/600V fuse protects 
current ranges and resistance ranges against over- 
loads up to 500 Vdc. For extra long life, the 4410 uses 
Beckman's custom designed switch and self-cleaning 
gold contacts. 

With so much performance and reliability at 
your convenience, you'd expect the Beckman 4410 
DMM to be expensive— not just $239. 

For more information, see your local distri- 
butor today. For the one nearest you, call or write: 
Beckman Instruments, Electronic Technologies 
Group/Instrumentation Products, 210 Ranger, Brea, 
CA 92621; (714) 993-8803. 



t V.O "^"i 



COM A 



C $239 



BECKMAN 



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performariae 
by design 



Folding Meters are Better 

Not all multimeters fold. There's a 
reason. While other manufacturers were 
busy copying each others designs, BBC 
looked at where portable meters were 
used and how they could be improved. 

The result is a unique approach. Folding 
meters with large displays (18 mm LCDs) 
and adjustable viewing angles. Now you 
can have high performance in a meter 
that excels in the field and on the bench. 

Hands Free vs Handheld 

In multimeters "hands free" is 
significantly better than "handheld." You 
need three hands to operate the typical 
"handheld" meter in the field. One for 
the meter and two for the probes. BBC's 
folding design lets you use a neck strap 
for the meter This frees your hands for 
the probes. 

On the bench, the large, adjustable 
displays pay off. It's a sensible design 
that lets you make measurements faster 
and more easily. 




Compact, Rugged and Affordable 

To design the impact resistant case that 
protects these DMM's, BBC relied on the 
industrial design skills of the Porsche 
Design Studios. 

When open, the display angle is easily 
adjustable. When closed, the display 
and the controls are protected, and the 
meters turn off automatically. 
Competitive pricing is another feature of 
BBC meters. Prices start at $193.00. 



Available Locally 



A Heritage of Precision 



BBC's track record of expertise in 
precision engineering spans eight 
decades. All our meters are built to 
tough VDE and DIN safety standards. 
The 31/2 -digit DMM's feature 0.1% basic 
dc accuracy and externally accessible 
fuses for overload protection, 

CIRCLE 60 ON FREE INFORMATION CARD 



BBC meters are available throughout the 
U.S. If your instrumentation supplier 
doesn't carry BBC yet, we'll gladly tell 
you who does. Call toll free: 

1-800-821-6327 

(In CO, 303-469-5231) 

BBC • METRAWATT/GOERZ 

6901 W.I 17th Avenue 

Broomfietd, CO 80020, Telex 45-4540 

Englnaaring Excaltanca in Tent and Moiaunment 



BBC 



GOERZ 
METRAWATT